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13085808149 = 48131271879
BaseRepresentation
bin11000010111111100…
…11001011000010101
31020202222020221010002
430023332121120111
5203244431330044
610002254141045
7642164351111
oct141376313025
936688227102
1013085808149
115605663387
1226524b1785
1313070b695b
148c1d04741
15518c5174e
hex30bf99615

13085808149 has 4 divisors (see below), whose sum is σ = 13086128160. Its totient is φ = 13085488140.

The previous prime is 13085808107. The next prime is 13085808179. The reversal of 13085808149 is 94180858031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13085808149 - 28 = 13085807893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13085808179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87809 + ... + 184070.

It is an arithmetic number, because the mean of its divisors is an integer number (3271532040).

Almost surely, 213085808149 is an apocalyptic number.

It is an amenable number.

13085808149 is a deficient number, since it is larger than the sum of its proper divisors (320011).

13085808149 is an equidigital number, since it uses as much as digits as its factorization.

13085808149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320010.

The product of its (nonzero) digits is 276480, while the sum is 47.

The spelling of 13085808149 in words is "thirteen billion, eighty-five million, eight hundred eight thousand, one hundred forty-nine".

Divisors: 1 48131 271879 13085808149