66570660207 has 12 divisors (see below), whose sum is σ = 96849403560. Its totient is φ = 44061155568.

The previous prime is 66570660193. The next prime is 66570660263. The reversal of 66570660207 is 70206607566.

It is not a de Polignac number, because 66570660207 - 2¹¹ = 66570658159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66570660307) 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, 26605728 + ... + 26608229.

It is an arithmetic number, because the mean of its divisors is an integer number (8070783630).

Almost surely, 2^66570660207 is an apocalyptic number.

66570660207 is a deficient number, since it is larger than the sum of its proper divisors (30278743353).

66570660207 is a wasteful number, since it uses less digits than its factorization.

66570660207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53214102 (or 53214099 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 66570660207 in words is "sixty-six billion, five hundred seventy million, six hundred sixty thousand, two hundred seven".