665028273017812 has 48 divisors (see below), whose sum is σ = 1279381198302144. Its totient is φ = 299962372608000.

The previous prime is 665028273017749. The next prime is 665028273017827. The reversal of 665028273017812 is 218710372820566.

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, 67731639 + ... + 76926142.

It is an arithmetic number, because the mean of its divisors is an integer number (26653774964628).

Almost surely, 2^{665028273017812} is an apocalyptic number.

It is an amenable number.

665028273017812 is a deficient number, since it is larger than the sum of its proper divisors (614352925284332).

665028273017812 is a wasteful number, since it uses less digits than its factorization.

665028273017812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144658600 (or 144658598 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 665028273017812 in words is "six hundred sixty-five trillion, twenty-eight billion, two hundred seventy-three million, seventeen thousand, eight hundred twelve".