12557811268 has 12 divisors (see below), whose sum is σ = 21977212432. Its totient is φ = 6278607720.

The previous prime is 12557811247. The next prime is 12557811283. The reversal of 12557811268 is 86211875521.

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, 39871 + ... + 163417.

Almost surely, 2^12557811268 is an apocalyptic number.

It is an amenable number.

12557811268 is a deficient number, since it is larger than the sum of its proper divisors (9419401164).

12557811268 is a wasteful number, since it uses less digits than its factorization.

12557811268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148962 (or 148960 counting only the distinct ones).

The product of its digits is 268800, while the sum is 46.

The spelling of 12557811268 in words is "twelve billion, five hundred fifty-seven million, eight hundred eleven thousand, two hundred sixty-eight".