665053100612 has 12 divisors (see below), whose sum is σ = 1192229339196. Its totient is φ = 324416146560.

The previous prime is 665053100603. The next prime is 665053100713. The reversal of 665053100612 is 216001350566.

It can be written as a sum of positive squares in 2 ways, for example, as 226258143556 + 438794957056 = 475666^2 + 662416^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2027600753 + ... + 2027601080.

It is an arithmetic number, because the mean of its divisors is an integer number (99352444933).

Almost surely, 2^665053100612 is an apocalyptic number.

It is an amenable number.

665053100612 is a deficient number, since it is larger than the sum of its proper divisors (527176238584).

665053100612 is a wasteful number, since it uses less digits than its factorization.

665053100612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4055201878 (or 4055201876 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 665053100612 in words is "six hundred sixty-five billion, fifty-three million, one hundred thousand, six hundred twelve".