656906912875 has 16 divisors (see below), whose sum is σ = 855464171328. Its totient is φ = 502676592000.

The previous prime is 656906912867. The next prime is 656906912917. The reversal of 656906912875 is 578219609656.

It is not a de Polignac number, because 656906912875 - 2³ = 656906912867 is a prime.

It is a Duffinian 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, 114241806 + ... + 114247555.

It is an arithmetic number, because the mean of its divisors is an integer number (53466510708).

Almost surely, 2^656906912875 is an apocalyptic number.

656906912875 is a deficient number, since it is larger than the sum of its proper divisors (198557258453).

656906912875 is a wasteful number, since it uses less digits than its factorization.

656906912875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228489399 (or 228489389 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 64.

The spelling of 656906912875 in words is "six hundred fifty-six billion, nine hundred six million, nine hundred twelve thousand, eight hundred seventy-five".