656564115016 has 8 divisors (see below), whose sum is σ = 1231057715670. Its totient is φ = 328282057504.

The previous prime is 656564114989. The next prime is 656564115091. The reversal of 656564115016 is 610511465656.

It can be written as a sum of positive squares in only one way, i.e., 403283422116 + 253280692900 = 635046^2 + 503270^2 .

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

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41035257181 + ... + 41035257196.

Almost surely, 2^656564115016 is an apocalyptic number.

It is an amenable number.

656564115016 is a deficient number, since it is larger than the sum of its proper divisors (574493600654).

656564115016 is a wasteful number, since it uses less digits than its factorization.

656564115016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82070514383 (or 82070514379 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 656564115016 in words is "six hundred fifty-six billion, five hundred sixty-four million, one hundred fifteen thousand, sixteen".