79957404884 has 24 divisors (see below), whose sum is σ = 166867628928. Its totient is φ = 32777569440.

The previous prime is 79957404883. The next prime is 79957404889. The reversal of 79957404884 is 48840475997.

It is a self number, because there is not a number n which added to its sum of digits gives 79957404884.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79957404883) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 62078087 + ... + 62079374.

It is an arithmetic number, because the mean of its divisors is an integer number (6952817872).

Almost surely, 2^79957404884 is an apocalyptic number.

It is an amenable number.

79957404884 is an abundant number, since it is smaller than the sum of its proper divisors (86910224044).

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

79957404884 is a wasteful number, since it uses less digits than its factorization.

79957404884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124157495 (or 124157493 counting only the distinct ones).

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 79957404884 in words is "seventy-nine billion, nine hundred fifty-seven million, four hundred four thousand, eight hundred eighty-four".