656412133645444 has 48 divisors (see below), whose sum is σ = 1330667075001600. Its totient is φ = 280013388802560.

The previous prime is 656412133645351. The next prime is 656412133645483. The reversal of 656412133645444 is 444546331214656.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1256982972 + ... + 1257505075.

It is an arithmetic number, because the mean of its divisors is an integer number (27722230729200).

Almost surely, 2^{656412133645444} is an apocalyptic number.

It is an amenable number.

656412133645444 is an abundant number, since it is smaller than the sum of its proper divisors (674254941356156).

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

656412133645444 is a wasteful number, since it uses less digits than its factorization.

656412133645444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514488428 (or 2514488426 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 58.

The spelling of 656412133645444 in words is "six hundred fifty-six trillion, four hundred twelve billion, one hundred thirty-three million, six hundred forty-five thousand, four hundred forty-four".