656752107272 has 16 divisors (see below), whose sum is σ = 1235344423740. Its totient is φ = 327326927616.

The previous prime is 656752107247. The next prime is 656752107289. The reversal of 656752107272 is 272701257656.

It can be written as a sum of positive squares in 2 ways, for example, as 645795460996 + 10956646276 = 803614^2 + 104674^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 656752107272.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131138093 + ... + 131143100.

Almost surely, 2^656752107272 is an apocalyptic number.

It is an amenable number.

656752107272 is a deficient number, since it is larger than the sum of its proper divisors (578592316468).

656752107272 is a wasteful number, since it uses less digits than its factorization.

656752107272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262281512 (or 262281508 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 50.

The spelling of 656752107272 in words is "six hundred fifty-six billion, seven hundred fifty-two million, one hundred seven thousand, two hundred seventy-two".