66006611675 has 24 divisors (see below), whose sum is σ = 82325236800. Its totient is φ = 52498190880.

The previous prime is 66006611641. The next prime is 66006611681. The reversal of 66006611675 is 57611660066.

It is not a de Polignac number, because 66006611675 - 2²⁸ = 65738176219 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4185956 + ... + 4201694.

It is an arithmetic number, because the mean of its divisors is an integer number (3430218200).

Almost surely, 2^66006611675 is an apocalyptic number.

66006611675 is a deficient number, since it is larger than the sum of its proper divisors (16318625125).

66006611675 is a wasteful number, since it uses less digits than its factorization.

66006611675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16715 (or 16710 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 66006611675 in words is "sixty-six billion, six million, six hundred eleven thousand, six hundred seventy-five".