12906115656 has 64 divisors (see below), whose sum is σ = 36883123200. Its totient is φ = 3686611008.

The previous prime is 12906115637. The next prime is 12906115661. The reversal of 12906115656 is 65651160921.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 1264831 + ... + 1274993.

It is an arithmetic number, because the mean of its divisors is an integer number (576298800).

Almost surely, 2^12906115656 is an apocalyptic number.

It is an amenable number.

12906115656 is an abundant number, since it is smaller than the sum of its proper divisors (23977007544).

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

12906115656 is a wasteful number, since it uses less digits than its factorization.

12906115656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17738 (or 17734 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 42.

The spelling of 12906115656 in words is "twelve billion, nine hundred six million, one hundred fifteen thousand, six hundred fifty-six".