63316568172 has 48 divisors (see below), whose sum is σ = 173567100672. Its totient is φ = 17710927680.

The previous prime is 63316568149. The next prime is 63316568191. The reversal of 63316568172 is 27186561336.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18447168 + ... + 18450599.

It is an arithmetic number, because the mean of its divisors is an integer number (3615981264).

Almost surely, 2^63316568172 is an apocalyptic number.

It is an amenable number.

63316568172 is an abundant number, since it is smaller than the sum of its proper divisors (110250532500).

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

63316568172 is a wasteful number, since it uses less digits than its factorization.

63316568172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36897798 (or 36897796 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The spelling of 63316568172 in words is "sixty-three billion, three hundred sixteen million, five hundred sixty-eight thousand, one hundred seventy-two".