634656162968 has 16 divisors (see below), whose sum is σ = 1241718580080. Its totient is φ = 303531208288.

The previous prime is 634656162961. The next prime is 634656162971. The reversal of 634656162968 is 869261656436.

It is a self number, because there is not a number n which added to its sum of digits gives 634656162968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634656162961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1724608955 + ... + 1724609322.

It is an arithmetic number, because the mean of its divisors is an integer number (77607411255).

Almost surely, 2^634656162968 is an apocalyptic number.

It is an amenable number.

634656162968 is a deficient number, since it is larger than the sum of its proper divisors (607062417112).

634656162968 is a wasteful number, since it uses less digits than its factorization.

634656162968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449218306 (or 3449218302 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 62.

The spelling of 634656162968 in words is "six hundred thirty-four billion, six hundred fifty-six million, one hundred sixty-two thousand, nine hundred sixty-eight".