66668930875 has 32 divisors (see below), whose sum is σ = 83830795776. Its totient is φ = 52933939200.

The previous prime is 66668930869. The next prime is 66668930891. The reversal of 66668930875 is 57803986666.

It is not a de Polignac number, because 66668930875 - 2²⁵ = 66635376443 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11022102 + ... + 11028148.

It is an arithmetic number, because the mean of its divisors is an integer number (2619712368).

Almost surely, 2^66668930875 is an apocalyptic number.

66668930875 is a deficient number, since it is larger than the sum of its proper divisors (17161864901).

66668930875 is a wasteful number, since it uses less digits than its factorization.

66668930875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6712 (or 6702 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 64.

The spelling of 66668930875 in words is "sixty-six billion, six hundred sixty-eight million, nine hundred thirty thousand, eight hundred seventy-five".