66800312364 has 24 divisors (see below), whose sum is σ = 155877075648. Its totient is φ = 22265387920.

The previous prime is 66800312357. The next prime is 66800312387. The reversal of 66800312364 is 46321300866.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38779 + ... + 367565.

It is an arithmetic number, because the mean of its divisors is an integer number (6494878152).

Almost surely, 2^66800312364 is an apocalyptic number.

It is an amenable number.

66800312364 is an abundant number, since it is smaller than the sum of its proper divisors (89076763284).

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

66800312364 is a wasteful number, since it uses less digits than its factorization.

66800312364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345725 (or 345723 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 66800312364 in words is "sixty-six billion, eight hundred million, three hundred twelve thousand, three hundred sixty-four".