656716688196 has 24 divisors (see below), whose sum is σ = 1532401012800. Its totient is φ = 218896695072.

The previous prime is 656716688183. The next prime is 656716688261. The reversal of 656716688196 is 691886617656.

It is a self number, because there is not a number n which added to its sum of digits gives 656716688196.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 796371 + ... + 1395578.

It is an arithmetic number, because the mean of its divisors is an integer number (63850042200).

Almost surely, 2^656716688196 is an apocalyptic number.

It is an amenable number.

656716688196 is an abundant number, since it is smaller than the sum of its proper divisors (875684324604).

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

656716688196 is a wasteful number, since it uses less digits than its factorization.

656716688196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216923 (or 2216921 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 69.

The spelling of 656716688196 in words is "six hundred fifty-six billion, seven hundred sixteen million, six hundred eighty-eight thousand, one hundred ninety-six".