12931162956 has 72 divisors (see below), whose sum is σ = 34503450800. Its totient is φ = 4083447168.

The previous prime is 12931162949. The next prime is 12931162961. The reversal of 12931162956 is 65926113921.

12931162956 is a `hidden beast` number, since 1 + 2 + 9 + 3 + 11 + 629 + 5 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220740 + ... + 273108.

Almost surely, 2^12931162956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12931162956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17251725400).

12931162956 is an abundant number, since it is smaller than the sum of its proper divisors (21572287844).

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

12931162956 is a wasteful number, since it uses less digits than its factorization.

12931162956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52436 (or 52393 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The spelling of 12931162956 in words is "twelve billion, nine hundred thirty-one million, one hundred sixty-two thousand, nine hundred fifty-six".