656550454010664 has 16 divisors (see below), whose sum is σ = 1641376135026720. Its totient is φ = 218850151336880.

The previous prime is 656550454010653. The next prime is 656550454010713. The reversal of 656550454010664 is 466010454055656.

It is a happy 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, 13678134458532 + ... + 13678134458579.

It is an arithmetic number, because the mean of its divisors is an integer number (102586008439170).

Almost surely, 2^{656550454010664} is an apocalyptic number.

It is an amenable number.

656550454010664 is an abundant number, since it is smaller than the sum of its proper divisors (984825681016056).

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

656550454010664 is a wasteful number, since it uses less digits than its factorization.

656550454010664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27356268917120 (or 27356268917116 counting only the distinct ones).

The product of its (nonzero) digits is 51840000, while the sum is 57.

The spelling of 656550454010664 in words is "six hundred fifty-six trillion, five hundred fifty billion, four hundred fifty-four million, ten thousand, six hundred sixty-four".