656906383609656 has 32 divisors (see below), whose sum is σ = 1646166828310800. Its totient is φ = 218448678631680.

The previous prime is 656906383609643. The next prime is 656906383609673.

656906383609656 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32507233741 + ... + 32507253948.

Almost surely, 2^{656906383609656} is an apocalyptic number.

It is an amenable number.

656906383609656 is an abundant number, since it is smaller than the sum of its proper divisors (989260444701144).

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

656906383609656 is a wasteful number, since it uses less digits than its factorization.

656906383609656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65014488119 (or 65014488115 counting only the distinct ones).

The product of its (nonzero) digits is 6802444800, while the sum is 78.

The spelling of 656906383609656 in words is "six hundred fifty-six trillion, nine hundred six billion, three hundred eighty-three million, six hundred nine thousand, six hundred fifty-six".