665431130662 has 16 divisors (see below), whose sum is σ = 1056881956752. Its totient is φ = 313137913600.

The previous prime is 665431130641. The next prime is 665431130701. The reversal of 665431130662 is 266031134566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1893162 + ... + 2216962.

It is an arithmetic number, because the mean of its divisors is an integer number (66055122297).

Almost surely, 2^665431130662 is an apocalyptic number.

665431130662 is a deficient number, since it is larger than the sum of its proper divisors (391450826090).

665431130662 is a wasteful number, since it uses less digits than its factorization.

665431130662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384263.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 665431130662 in words is "six hundred sixty-five billion, four hundred thirty-one million, one hundred thirty thousand, six hundred sixty-two".