656340066165 has 32 divisors (see below), whose sum is σ = 1213649706240. Its totient is φ = 296669919744.

The previous prime is 656340066157. The next prime is 656340066181. The reversal of 656340066165 is 561660043656.

It is not a de Polignac number, because 656340066165 - 2³ = 656340066157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35107834 + ... + 35126523.

It is an arithmetic number, because the mean of its divisors is an integer number (37926553320).

Almost surely, 2^656340066165 is an apocalyptic number.

It is an amenable number.

656340066165 is a deficient number, since it is larger than the sum of its proper divisors (557309640075).

656340066165 is a wasteful number, since it uses less digits than its factorization.

656340066165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70234461.

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 656340066165 in words is "six hundred fifty-six billion, three hundred forty million, sixty-six thousand, one hundred sixty-five".