79572564388 has 24 divisors (see below), whose sum is σ = 142631042400. Its totient is φ = 38830541568.

The previous prime is 79572564371. The next prime is 79572564391. The reversal of 79572564388 is 88346527597.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1180045 + ... + 1245652.

It is an arithmetic number, because the mean of its divisors is an integer number (5942960100).

Almost surely, 2^79572564388 is an apocalyptic number.

It is an amenable number.

79572564388 is a deficient number, since it is larger than the sum of its proper divisors (63058478012).

79572564388 is a wasteful number, since it uses less digits than its factorization.

79572564388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425899 (or 2425897 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 64.

The spelling of 79572564388 in words is "seventy-nine billion, five hundred seventy-two million, five hundred sixty-four thousand, three hundred eighty-eight".