79902056891504 has 80 divisors (see below), whose sum is σ = 157007646998400. Its totient is φ = 39387997059840.

The previous prime is 79902056891497. The next prime is 79902056891507. The reversal of 79902056891504 is 40519865020997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79902056891507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3323286107 + ... + 3323310149.

It is an arithmetic number, because the mean of its divisors is an integer number (1962595587480).

Almost surely, 2^{79902056891504} is an apocalyptic number.

It is an amenable number.

79902056891504 is a deficient number, since it is larger than the sum of its proper divisors (77105590106896).

79902056891504 is a wasteful number, since it uses less digits than its factorization.

79902056891504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34438 (or 34432 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 65.

The spelling of 79902056891504 in words is "seventy-nine trillion, nine hundred two billion, fifty-six million, eight hundred ninety-one thousand, five hundred four".