656472304657256 has 32 divisors (see below), whose sum is σ = 1273333357197000. Its totient is φ = 316916804176896.

The previous prime is 656472304657243. The next prime is 656472304657283. The reversal of 656472304657256 is 652756403274656.

It can be written as a sum of positive squares in 4 ways, for example, as 534186084601156 + 122286220056100 = 23112466^2 + 11058310^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86383340 + ... + 93675108.

Almost surely, 2^{656472304657256} is an apocalyptic number.

It is an amenable number.

656472304657256 is a deficient number, since it is larger than the sum of its proper divisors (616861052539744).

656472304657256 is a wasteful number, since it uses less digits than its factorization.

656472304657256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7679861 (or 7679857 counting only the distinct ones).

The product of its (nonzero) digits is 1524096000, while the sum is 68.

The spelling of 656472304657256 in words is "six hundred fifty-six trillion, four hundred seventy-two billion, three hundred four million, six hundred fifty-seven thousand, two hundred fifty-six".