656344443656 has 32 divisors (see below), whose sum is σ = 1355556945600. Its totient is φ = 295441890240.

The previous prime is 656344443641. The next prime is 656344443691.

656344443656 is nontrivially palindromic in base 10.

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, 36197051 + ... + 36215178.

It is an arithmetic number, because the mean of its divisors is an integer number (42361154550).

Almost surely, 2^656344443656 is an apocalyptic number.

It is an amenable number.

656344443656 is an abundant number, since it is smaller than the sum of its proper divisors (699212501944).

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

656344443656 is a wasteful number, since it uses less digits than its factorization.

656344443656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72412349 (or 72412345 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 56.

The spelling of 656344443656 in words is "six hundred fifty-six billion, three hundred forty-four million, four hundred forty-three thousand, six hundred fifty-six".