668766876012 has 48 divisors (see below), whose sum is σ = 1733929331680. Its totient is φ = 222910812864.

The previous prime is 668766875981. The next prime is 668766876013. The reversal of 668766876012 is 210678667866.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (668766876013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2094438 + ... + 2392530.

Almost surely, 2^668766876012 is an apocalyptic number.

It is an amenable number.

668766876012 is an abundant number, since it is smaller than the sum of its proper divisors (1065162455668).

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

668766876012 is a wasteful number, since it uses less digits than its factorization.

668766876012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318879 (or 318871 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 668766876012 in words is "six hundred sixty-eight billion, seven hundred sixty-six million, eight hundred seventy-six thousand, twelve".