66705674307 has 12 divisors (see below), whose sum is σ = 92976027144. Its totient is φ = 42536950720.

The previous prime is 66705674279. The next prime is 66705674311. The reversal of 66705674307 is 70347650766.

It is not a de Polignac number, because 66705674307 - 2⁸ = 66705674051 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66705674307.

It is not an unprimeable number, because it can be changed into a prime (66705672307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21014694 + ... + 21017867.

It is an arithmetic number, because the mean of its divisors is an integer number (7748002262).

Almost surely, 2^66705674307 is an apocalyptic number.

66705674307 is a deficient number, since it is larger than the sum of its proper divisors (26270352837).

66705674307 is a wasteful number, since it uses less digits than its factorization.

66705674307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42032610 (or 42032587 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 51.

The spelling of 66705674307 in words is "sixty-six billion, seven hundred five million, six hundred seventy-four thousand, three hundred seven".