66570660770 has 16 divisors (see below), whose sum is σ = 123692583168. Its totient is φ = 25769287920.

The previous prime is 66570660733. The next prime is 66570660787. The reversal of 66570660770 is 7706607566.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107371724 + ... + 107372343.

It is an arithmetic number, because the mean of its divisors is an integer number (7730786448).

Almost surely, 2^66570660770 is an apocalyptic number.

66570660770 is a deficient number, since it is larger than the sum of its proper divisors (57121922398).

66570660770 is a wasteful number, since it uses less digits than its factorization.

66570660770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214744105.

The product of its (nonzero) digits is 2222640, while the sum is 50.

The spelling of 66570660770 in words is "sixty-six billion, five hundred seventy million, six hundred sixty thousand, seven hundred seventy".