665376603508 has 48 divisors (see below), whose sum is σ = 1184736672000. Its totient is φ = 326923204608.

The previous prime is 665376603499. The next prime is 665376603511. The reversal of 665376603508 is 805306673566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83074608 + ... + 83082616.

It is an arithmetic number, because the mean of its divisors is an integer number (24682014000).

Almost surely, 2^665376603508 is an apocalyptic number.

It is an amenable number.

665376603508 is a deficient number, since it is larger than the sum of its proper divisors (519360068492).

665376603508 is a wasteful number, since it uses less digits than its factorization.

665376603508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9304 (or 9302 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 55.

The spelling of 665376603508 in words is "six hundred sixty-five billion, three hundred seventy-six million, six hundred three thousand, five hundred eight".