12556350956 has 12 divisors (see below), whose sum is σ = 21997071768. Its totient is φ = 6271473312.

The previous prime is 12556350907. The next prime is 12556350973. The reversal of 12556350956 is 65905365521.

It is a super-2 number, since 2×12556350956² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12556350956.

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, 1671326 + ... + 1678821.

It is an arithmetic number, because the mean of its divisors is an integer number (1833089314).

Almost surely, 2^12556350956 is an apocalyptic number.

It is an amenable number.

12556350956 is a deficient number, since it is larger than the sum of its proper divisors (9440720812).

12556350956 is a wasteful number, since it uses less digits than its factorization.

12556350956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351088 (or 3351086 counting only the distinct ones).

The product of its (nonzero) digits is 1215000, while the sum is 47.

The spelling of 12556350956 in words is "twelve billion, five hundred fifty-six million, three hundred fifty thousand, nine hundred fifty-six".