66568659275 has 6 divisors (see below), whose sum is σ = 82545137532. Its totient is φ = 53254927400.

The previous prime is 66568659263. The next prime is 66568659281. The reversal of 66568659275 is 57295686566.

It is not a de Polignac number, because 66568659275 - 2²⁸ = 66300223819 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1331373161 + ... + 1331373210.

It is an arithmetic number, because the mean of its divisors is an integer number (13757522922).

Almost surely, 2^66568659275 is an apocalyptic number.

66568659275 is a deficient number, since it is larger than the sum of its proper divisors (15976478257).

66568659275 is a wasteful number, since it uses less digits than its factorization.

66568659275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662746381 (or 2662746376 counting only the distinct ones).

The product of its digits is 163296000, while the sum is 65.

The spelling of 66568659275 in words is "sixty-six billion, five hundred sixty-eight million, six hundred fifty-nine thousand, two hundred seventy-five".