12791232864 has 72 divisors (see below), whose sum is σ = 36873417672. Its totient is φ = 4205329920.

The previous prime is 12791232829. The next prime is 12791232907. The reversal of 12791232864 is 46823219721.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283182 + ... + 325229.

It is an arithmetic number, because the mean of its divisors is an integer number (512130801).

Almost surely, 2^12791232864 is an apocalyptic number.

It is an amenable number.

12791232864 is an abundant number, since it is smaller than the sum of its proper divisors (24082184808).

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

12791232864 is a wasteful number, since it uses less digits than its factorization.

12791232864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608500 (or 608489 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The spelling of 12791232864 in words is "twelve billion, seven hundred ninety-one million, two hundred thirty-two thousand, eight hundred sixty-four".