656212364634 has 16 divisors (see below), whose sum is σ = 1312490171520. Its totient is φ = 218726547840.

The previous prime is 656212364623. The next prime is 656212364651. The reversal of 656212364634 is 436463212656.

It is a super-2 number, since 2×656212364634² (a number of 24 digits) contains 22 as substring.

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, 2595922 + ... + 2837469.

It is an arithmetic number, because the mean of its divisors is an integer number (82030635720).

Almost surely, 2^656212364634 is an apocalyptic number.

656212364634 is an abundant number, since it is smaller than the sum of its proper divisors (656277806886).

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

656212364634 is a wasteful number, since it uses less digits than its factorization.

656212364634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453525.

The product of its digits is 3732480, while the sum is 48.

The spelling of 656212364634 in words is "six hundred fifty-six billion, two hundred twelve million, three hundred sixty-four thousand, six hundred thirty-four".