656622431160 has 128 divisors (see below), whose sum is σ = 1975978368000. Its totient is φ = 174556892160.

The previous prime is 656622431149. The next prime is 656622431189. The reversal of 656622431160 is 61134226656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61298205 + ... + 61308915.

It is an arithmetic number, because the mean of its divisors is an integer number (15437331000).

Almost surely, 2^656622431160 is an apocalyptic number.

656622431160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

656622431160 is an abundant number, since it is smaller than the sum of its proper divisors (1319355936840).

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

656622431160 is a wasteful number, since it uses less digits than its factorization.

656622431160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12261 (or 12257 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 656622431160 in words is "six hundred fifty-six billion, six hundred twenty-two million, four hundred thirty-one thousand, one hundred sixty".