79147085522 has 18 divisors (see below), whose sum is σ = 119278851237. Its totient is φ = 39388338000.

The previous prime is 79147085519. The next prime is 79147085533. The reversal of 79147085522 is 22558074197.

It can be written as a sum of positive squares in 2 ways, for example, as 68550236041 + 10596849481 = 261821^2 + 102941^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=198931.

It is a super-2 number, since 2×79147085522² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 131692022 + ... + 131692622.

Almost surely, 2^79147085522 is an apocalyptic number.

79147085522 is a deficient number, since it is larger than the sum of its proper divisors (40131765715).

79147085522 is an frugal number, since it uses more digits than its factorization.

79147085522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 50.

Multiplying 79147085522 by its sum of digits (50), we get a square (3957354276100 = 1989310²).

The spelling of 79147085522 in words is "seventy-nine billion, one hundred forty-seven million, eighty-five thousand, five hundred twenty-two".