656112960731 has 16 divisors (see below), whose sum is σ = 700935358464. Its totient is φ = 611983755264.

The previous prime is 656112960683. The next prime is 656112960757. The reversal of 656112960731 is 137069211656.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-656112960731 is a prime.

It is a super-3 number, since 3×656112960731³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656111960731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25876646 + ... + 25901988.

It is an arithmetic number, because the mean of its divisors is an integer number (43808459904).

Almost surely, 2^656112960731 is an apocalyptic number.

656112960731 is a deficient number, since it is larger than the sum of its proper divisors (44822397733).

656112960731 is a wasteful number, since it uses less digits than its factorization.

656112960731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38950.

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 656112960731 in words is "six hundred fifty-six billion, one hundred twelve million, nine hundred sixty thousand, seven hundred thirty-one".