665203635164 has 48 divisors (see below), whose sum is σ = 1184335520256. Its totient is φ = 326854382400.

The previous prime is 665203635127. The next prime is 665203635181. The reversal of 665203635164 is 461536302566.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121318367 + ... + 121323849.

It is an arithmetic number, because the mean of its divisors is an integer number (24673656672).

Almost surely, 2^665203635164 is an apocalyptic number.

It is an amenable number.

665203635164 is a deficient number, since it is larger than the sum of its proper divisors (519131885092).

665203635164 is a wasteful number, since it uses less digits than its factorization.

665203635164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6866 (or 6864 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 47.

The spelling of 665203635164 in words is "six hundred sixty-five billion, two hundred three million, six hundred thirty-five thousand, one hundred sixty-four".