665650375246264 has 16 divisors (see below), whose sum is σ = 1248097094577720. Its totient is φ = 332824483358880.

The previous prime is 665650375246237. The next prime is 665650375246361. The reversal of 665650375246264 is 462642573056566.

665650375246264 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 665650375246264.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84005214 + ... + 91586989.

Almost surely, 2^{665650375246264} is an apocalyptic number.

It is an amenable number.

665650375246264 is a deficient number, since it is larger than the sum of its proper divisors (582446719331456).

665650375246264 is a wasteful number, since it uses less digits than its factorization.

665650375246264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176066070 (or 176066066 counting only the distinct ones).

The product of its (nonzero) digits is 1306368000, while the sum is 67.

The spelling of 665650375246264 in words is "six hundred sixty-five trillion, six hundred fifty billion, three hundred seventy-five million, two hundred forty-six thousand, two hundred sixty-four".