665544335338 has 8 divisors (see below), whose sum is σ = 1012377299040. Its totient is φ = 328085235660.

The previous prime is 665544335333. The next prime is 665544335369. The reversal of 665544335338 is 833533445566.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (665544335333) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2343465828 + ... + 2343466111.

It is an arithmetic number, because the mean of its divisors is an integer number (126547162380).

Almost surely, 2^665544335338 is an apocalyptic number.

665544335338 is a deficient number, since it is larger than the sum of its proper divisors (346832963702).

665544335338 is a wasteful number, since it uses less digits than its factorization.

665544335338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686932012.

The product of its digits is 46656000, while the sum is 55.

The spelling of 665544335338 in words is "six hundred sixty-five billion, five hundred forty-four million, three hundred thirty-five thousand, three hundred thirty-eight".