656963109372 has 12 divisors (see below), whose sum is σ = 1532913921896. Its totient is φ = 218987703120.

The previous prime is 656963109343. The next prime is 656963109391. The reversal of 656963109372 is 273901369656.

It is a happy number.

656963109372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 27373462879 + ... + 27373462902.

Almost surely, 2^656963109372 is an apocalyptic number.

It is an amenable number.

656963109372 is an abundant number, since it is smaller than the sum of its proper divisors (875950812524).

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

656963109372 is a wasteful number, since it uses less digits than its factorization.

656963109372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54746925788 (or 54746925786 counting only the distinct ones).

The product of its (nonzero) digits is 11022480, while the sum is 57.

The spelling of 656963109372 in words is "six hundred fifty-six billion, nine hundred sixty-three million, one hundred nine thousand, three hundred seventy-two".