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79842901161 = 389320993187
BaseRepresentation
bin100101001011100000…
…0011111110010101001
321122002101111121220110
41022113000133302221
52302004240314121
6100402422244533
75524403314332
oct1122700376251
9248071447813
1079842901161
1130952266431
1213583286749
1376b571ba1a
143c15d63289
1521247dad76
hex129701fca9

79842901161 has 16 divisors (see below), whose sum is σ = 107688052800. Its totient is φ = 52613561088.

The previous prime is 79842901121. The next prime is 79842901169. The reversal of 79842901161 is 16110924897.

It is not a de Polignac number, because 79842901161 - 211 = 79842899113 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 79842901161.

It is not an unprimeable number, because it can be changed into a prime (79842901169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 810210 + ... + 903396.

It is an arithmetic number, because the mean of its divisors is an integer number (6730503300).

Almost surely, 279842901161 is an apocalyptic number.

It is an amenable number.

79842901161 is a deficient number, since it is larger than the sum of its proper divisors (27845151639).

79842901161 is a wasteful number, since it uses less digits than its factorization.

79842901161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96488.

The product of its (nonzero) digits is 217728, while the sum is 48.

The spelling of 79842901161 in words is "seventy-nine billion, eight hundred forty-two million, nine hundred one thousand, one hundred sixty-one".

Divisors: 1 3 89 267 3209 9627 93187 279561 285601 856803 8293643 24880929 299037083 897111249 26614300387 79842901161