79557487428 has 24 divisors (see below), whose sum is σ = 185776859520. Its totient is φ = 26498773600.

The previous prime is 79557487421. The next prime is 79557487433. The reversal of 79557487428 is 82478475597.

It is not an unprimeable number, because it can be changed into a prime (79557487421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2532348 + ... + 2563571.

It is an arithmetic number, because the mean of its divisors is an integer number (7740702480).

Almost surely, 2^79557487428 is an apocalyptic number.

It is an amenable number.

79557487428 is an abundant number, since it is smaller than the sum of its proper divisors (106219372092).

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

79557487428 is a wasteful number, since it uses less digits than its factorization.

79557487428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5097227 (or 5097225 counting only the distinct ones).

The product of its digits is 158054400, while the sum is 66.

The spelling of 79557487428 in words is "seventy-nine billion, five hundred fifty-seven million, four hundred eighty-seven thousand, four hundred twenty-eight".