656312613464 has 8 divisors (see below), whose sum is σ = 1230586150260. Its totient is φ = 328156306728.

The previous prime is 656312613373. The next prime is 656312613469. The reversal of 656312613464 is 464316213656.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656312613469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41019538334 + ... + 41019538349.

Almost surely, 2^656312613464 is an apocalyptic number.

It is an amenable number.

656312613464 is a deficient number, since it is larger than the sum of its proper divisors (574273536796).

656312613464 is a wasteful number, since it uses less digits than its factorization.

656312613464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82039076689 (or 82039076685 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 47.

The spelling of 656312613464 in words is "six hundred fifty-six billion, three hundred twelve million, six hundred thirteen thousand, four hundred sixty-four".