668030544872 has 16 divisors (see below), whose sum is σ = 1273787056800. Its totient is φ = 328353996400.

The previous prime is 668030544799. The next prime is 668030544889. The reversal of 668030544872 is 278445030866.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707659004 + ... + 707659947.

It is an arithmetic number, because the mean of its divisors is an integer number (79611691050).

Almost surely, 2^668030544872 is an apocalyptic number.

It is an amenable number.

668030544872 is a deficient number, since it is larger than the sum of its proper divisors (605756511928).

668030544872 is a wasteful number, since it uses less digits than its factorization.

668030544872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415319016 (or 1415319012 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 53.

The spelling of 668030544872 in words is "six hundred sixty-eight billion, thirty million, five hundred forty-four thousand, eight hundred seventy-two".