12493764128856 has 16 divisors (see below), whose sum is σ = 31234410322200. Its totient is φ = 4164588042944.

The previous prime is 12493764128809. The next prime is 12493764128939. The reversal of 12493764128856 is 65882146739421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260286752661 + ... + 260286752708.

Almost surely, 2^{12493764128856} is an apocalyptic number.

It is an amenable number.

12493764128856 is an abundant number, since it is smaller than the sum of its proper divisors (18740646193344).

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

12493764128856 is a wasteful number, since it uses less digits than its factorization.

12493764128856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520573505378 (or 520573505374 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 66.

The spelling of 12493764128856 in words is "twelve trillion, four hundred ninety-three billion, seven hundred sixty-four million, one hundred twenty-eight thousand, eight hundred fifty-six".