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20310133205020 = 2257439379771493
BaseRepresentation
bin1001001111000110100100…
…10001100110100000011100
32122220122000002210200110111
410213203102101212200130
510130230123100030040
6111110202453015404
74164234014536111
oct447432221464034
978818002720414
1020310133205020
11652052a78a23a
1223402a6624564
13b4431159b339
145030310b8908
152534a6e65dea
hex1278d246681c

20310133205020 has 96 divisors (see below), whose sum is σ = 42826690666368. Its totient is φ = 8090742546432.

The previous prime is 20310133205017. The next prime is 20310133205051. The reversal of 20310133205020 is 2050233101302.

It is a junction number, because it is equal to n+sod(n) for n = 20310133204982 and 20310133205000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13603571394 + ... + 13603572886.

It is an arithmetic number, because the mean of its divisors is an integer number (446111361108).

Almost surely, 220310133205020 is an apocalyptic number.

20310133205020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20310133205020 is an abundant number, since it is smaller than the sum of its proper divisors (22516557461348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20310133205020 is a wasteful number, since it uses less digits than its factorization.

20310133205020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4159 (or 4157 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 20310133205020 its reverse (2050233101302), we get a palindrome (22360366306322).

The spelling of 20310133205020 in words is "twenty trillion, three hundred ten billion, one hundred thirty-three million, two hundred five thousand, twenty".

Divisors: 1 2 4 5 10 20 743 937 977 1486 1493 1874 1954 2972 2986 3715 3748 3908 4685 4885 5972 7430 7465 9370 9770 14860 14930 18740 19540 29860 696191 725911 915449 1109299 1392382 1398941 1451822 1458661 1830898 2218598 2784764 2797882 2903644 2917322 3480955 3629555 3661796 4437196 4577245 5546495 5595764 5834644 6961910 6994705 7259110 7293305 9154490 11092990 13923820 13989410 14518220 14586610 18308980 22185980 27978820 29173220 680178607 1039413163 1083785123 1360357214 1366765357 2078826326 2167570246 2720714428 2733530714 3400893035 4157652652 4335140492 5197065815 5418925615 5467061428 6801786070 6833826785 10394131630 10837851230 13603572140 13667653570 20788263260 21675702460 27335307140 1015506660251 2031013320502 4062026641004 5077533301255 10155066602510 20310133205020