12656360656 has 20 divisors (see below), whose sum is σ = 24523575232. Its totient is φ = 6327696096.

The previous prime is 12656360653. The next prime is 12656360657. The reversal of 12656360656 is 65606365621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12656360653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284671 + ... + 326113.

Almost surely, 2^12656360656 is an apocalyptic number.

12656360656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12656360656 is a deficient number, since it is larger than the sum of its proper divisors (11867214576).

12656360656 is a wasteful number, since it uses less digits than its factorization.

12656360656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60538 (or 60532 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 46.

The spelling of 12656360656 in words is "twelve billion, six hundred fifty-six million, three hundred sixty thousand, six hundred fifty-six".