668308876048 has 40 divisors (see below), whose sum is σ = 1433644981920. Its totient is φ = 299242775040.

The previous prime is 668308876031. The next prime is 668308876057. The reversal of 668308876048 is 840678803866.

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, 28325593 + ... + 28349176.

It is an arithmetic number, because the mean of its divisors is an integer number (35841124548).

Almost surely, 2^668308876048 is an apocalyptic number.

It is an amenable number.

668308876048 is an abundant number, since it is smaller than the sum of its proper divisors (765336105872).

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

668308876048 is a wasteful number, since it uses less digits than its factorization.

668308876048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56674855 (or 56674849 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 64.

The spelling of 668308876048 in words is "six hundred sixty-eight billion, three hundred eight million, eight hundred seventy-six thousand, forty-eight".