665057434164 has 48 divisors (see below), whose sum is σ = 1553176719360. Its totient is φ = 221489340640.

The previous prime is 665057434117. The next prime is 665057434247. The reversal of 665057434164 is 461434750566.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 82724857 + ... + 82732895.

It is an arithmetic number, because the mean of its divisors is an integer number (32357848320).

Almost surely, 2^665057434164 is an apocalyptic number.

It is an amenable number.

665057434164 is an abundant number, since it is smaller than the sum of its proper divisors (888119285196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665057434164 is a wasteful number, since it uses less digits than its factorization.

665057434164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13300 (or 13298 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 51.

The spelling of 665057434164 in words is "six hundred sixty-five billion, fifty-seven million, four hundred thirty-four thousand, one hundred sixty-four".