5656643506731 has 48 divisors (see below), whose sum is σ = 8847588372480. Its totient is φ = 3205126048320.

The previous prime is 5656643506729. The next prime is 5656643506739. The reversal of 5656643506731 is 1376053466565.

It is not a de Polignac number, because 5656643506731 - 2¹ = 5656643506729 is a prime.

It is a super-2 number, since 2×5656643506731² (a number of 26 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (5656643506739) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 33725905 + ... + 33893213.

It is an arithmetic number, because the mean of its divisors is an integer number (184324757760).

Almost surely, 2^{5656643506731} is an apocalyptic number.

5656643506731 is a deficient number, since it is larger than the sum of its proper divisors (3190944865749).

5656643506731 is a wasteful number, since it uses less digits than its factorization.

5656643506731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169264 (or 169257 counting only the distinct ones).

The product of its (nonzero) digits is 40824000, while the sum is 57.

The spelling of 5656643506731 in words is "five trillion, six hundred fifty-six billion, six hundred forty-three million, five hundred six thousand, seven hundred thirty-one".