656711321513 has 16 divisors (see below), whose sum is σ = 712894518336. Its totient is φ = 601341174720.

The previous prime is 656711321501. The next prime is 656711321527. The reversal of 656711321513 is 315123117656.

656711321513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 656711321513 - 2³⁸ = 381833414569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656711321213) 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, 4538795 + ... + 4681247.

It is an arithmetic number, because the mean of its divisors is an integer number (44555907396).

Almost surely, 2^656711321513 is an apocalyptic number.

It is an amenable number.

656711321513 is a deficient number, since it is larger than the sum of its proper divisors (56183196823).

656711321513 is a wasteful number, since it uses less digits than its factorization.

656711321513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145304.

The product of its digits is 113400, while the sum is 41.

The spelling of 656711321513 in words is "six hundred fifty-six billion, seven hundred eleven million, three hundred twenty-one thousand, five hundred thirteen".