79995117121892 has 48 divisors (see below), whose sum is σ = 165548450108160. Its totient is φ = 33093165528192.

The previous prime is 79995117121849. The next prime is 79995117121939. The reversal of 79995117121892 is 29812171159997.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9039323 + ... + 15546690.

It is an arithmetic number, because the mean of its divisors is an integer number (3448926043920).

Almost surely, 2^{79995117121892} is an apocalyptic number.

It is an amenable number.

79995117121892 is an abundant number, since it is smaller than the sum of its proper divisors (85553332986268).

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

79995117121892 is a wasteful number, since it uses less digits than its factorization.

79995117121892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24590060 (or 24590058 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 71.

The spelling of 79995117121892 in words is "seventy-nine trillion, nine hundred ninety-five billion, one hundred seventeen million, one hundred twenty-one thousand, eight hundred ninety-two".