656910006880 has 48 divisors (see below), whose sum is σ = 1555346016000. Its totient is φ = 262188997632.

The previous prime is 656910006877. The next prime is 656910006917. The reversal of 656910006880 is 88600019656.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 4418880 + ... + 4565119.

It is an arithmetic number, because the mean of its divisors is an integer number (32403042000).

Almost surely, 2^656910006880 is an apocalyptic number.

It is an amenable number.

656910006880 is an abundant number, since it is smaller than the sum of its proper divisors (898436009120).

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

656910006880 is a wasteful number, since it uses less digits than its factorization.

656910006880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8984471 (or 8984463 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 656910006880 in words is "six hundred fifty-six billion, nine hundred ten million, six thousand, eight hundred eighty".