665170516048 has 20 divisors (see below), whose sum is σ = 1288789570720. Its totient is φ = 332579659104.

The previous prime is 665170516027. The next prime is 665170516079. The reversal of 665170516048 is 840615071566.

It is a junction number, because it is equal to n+sod(n) for n = 665170515992 and 665170516010.

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 3 ways as a sum of consecutive naturals, for example, 731461 + ... + 1365787.

It is an arithmetic number, because the mean of its divisors is an integer number (64439478536).

Almost surely, 2^665170516048 is an apocalyptic number.

It is an amenable number.

665170516048 is a deficient number, since it is larger than the sum of its proper divisors (623619054672).

665170516048 is a wasteful number, since it uses less digits than its factorization.

665170516048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699874 (or 699868 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 49.

The spelling of 665170516048 in words is "six hundred sixty-five billion, one hundred seventy million, five hundred sixteen thousand, forty-eight".