656212364444 has 96 divisors (see below), whose sum is σ = 1416870860160. Its totient is φ = 258960457728.

The previous prime is 656212364429. The next prime is 656212364453. The reversal of 656212364444 is 444463212656.

It is a super-2 number, since 2×656212364444² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 509085752 + ... + 509087040.

It is an arithmetic number, because the mean of its divisors is an integer number (14759071460).

Almost surely, 2^656212364444 is an apocalyptic number.

It is an amenable number.

656212364444 is an abundant number, since it is smaller than the sum of its proper divisors (760658495716).

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

656212364444 is a wasteful number, since it uses less digits than its factorization.

656212364444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3679 (or 3677 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 47.

The spelling of 656212364444 in words is "six hundred fifty-six billion, two hundred twelve million, three hundred sixty-four thousand, four hundred forty-four".