79169381856 has 60 divisors (see below), whose sum is σ = 232834960512. Its totient is φ = 26389793088.

The previous prime is 79169381839. The next prime is 79169381869. The reversal of 79169381856 is 65818396197.

It is a super-2 number, since 2×79169381856² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79169381793 and 79169381802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15269280 + ... + 15274463.

Almost surely, 2^79169381856 is an apocalyptic number.

It is an amenable number.

79169381856 is an abundant number, since it is smaller than the sum of its proper divisors (153665578656).

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

79169381856 is a wasteful number, since it uses less digits than its factorization.

79169381856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30543765 (or 30543748 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The spelling of 79169381856 in words is "seventy-nine billion, one hundred sixty-nine million, three hundred eighty-one thousand, eight hundred fifty-six".