656264551660 has 24 divisors (see below), whose sum is σ = 1378901795040. Its totient is φ = 262363680384.

The previous prime is 656264551637. The next prime is 656264551693. The reversal of 656264551660 is 66155462656.

656264551660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 656264551598 and 656264551607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8845905 + ... + 8919784.

It is an arithmetic number, because the mean of its divisors is an integer number (57454241460).

Almost surely, 2^656264551660 is an apocalyptic number.

It is an amenable number.

656264551660 is an abundant number, since it is smaller than the sum of its proper divisors (722637243380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656264551660 is a wasteful number, since it uses less digits than its factorization.

656264551660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17767545 (or 17767543 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 52.

The spelling of 656264551660 in words is "six hundred fifty-six billion, two hundred sixty-four million, five hundred fifty-one thousand, six hundred sixty".