656285582656 has 56 divisors (see below), whose sum is σ = 1434775713120. Its totient is φ = 295358016000.

The previous prime is 656285582597. The next prime is 656285582713.

656285582656 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (64).

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 7 ways as a sum of consecutive naturals, for example, 4543866 + ... + 4686073.

Almost surely, 2^656285582656 is an apocalyptic number.

It is an amenable number.

656285582656 is an abundant number, since it is smaller than the sum of its proper divisors (778490130464).

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

656285582656 is a wasteful number, since it uses less digits than its factorization.

656285582656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9230063 (or 9230053 counting only the distinct ones).

The product of its digits is 207360000, while the sum is 64.

The spelling of 656285582656 in words is "six hundred fifty-six billion, two hundred eighty-five million, five hundred eighty-two thousand, six hundred fifty-six".