665332444396 has 24 divisors (see below), whose sum is σ = 1213123516416. Its totient is φ = 318926308560.

The previous prime is 665332444379. The next prime is 665332444411. The reversal of 665332444396 is 693444233566.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 25059556 + ... + 25086091.

It is an arithmetic number, because the mean of its divisors is an integer number (50546813184).

Almost surely, 2^665332444396 is an apocalyptic number.

It is an amenable number.

665332444396 is a deficient number, since it is larger than the sum of its proper divisors (547791072020).

665332444396 is a wasteful number, since it uses less digits than its factorization.

665332444396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50145789 (or 50145787 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 55.

The spelling of 665332444396 in words is "six hundred sixty-five billion, three hundred thirty-two million, four hundred forty-four thousand, three hundred ninety-six".