12365987256 has 64 divisors (see below), whose sum is σ = 39257107200. Its totient is φ = 3533138784.

The previous prime is 12365987213. The next prime is 12365987279. The reversal of 12365987256 is 65278956321.

12365987256 is a `hidden beast` number, since 1 + 23 + 6 + 598 + 7 + 25 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4087770 + ... + 4090793.

It is an arithmetic number, because the mean of its divisors is an integer number (613392300).

Almost surely, 2^12365987256 is an apocalyptic number.

It is an amenable number.

12365987256 is an abundant number, since it is smaller than the sum of its proper divisors (26891119944).

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

12365987256 is a wasteful number, since it uses less digits than its factorization.

12365987256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8178585 (or 8178575 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 12365987256 in words is "twelve billion, three hundred sixty-five million, nine hundred eighty-seven thousand, two hundred fifty-six".