665560006166 has 32 divisors (see below), whose sum is σ = 1154851613568. Its totient is φ = 284314560640.

The previous prime is 665560006117. The next prime is 665560006187. The reversal of 665560006166 is 661600065566.

It is a self number, because there is not a number n which added to its sum of digits gives 665560006166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1047320 + ... + 1558203.

It is an arithmetic number, because the mean of its divisors is an integer number (36089112924).

Almost surely, 2^665560006166 is an apocalyptic number.

665560006166 is a deficient number, since it is larger than the sum of its proper divisors (489291607402).

665560006166 is a wasteful number, since it uses less digits than its factorization.

665560006166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606236.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 665560006166 in words is "six hundred sixty-five billion, five hundred sixty million, six thousand, one hundred sixty-six".