663838883792 has 20 divisors (see below), whose sum is σ = 1469928957216. Its totient is φ = 284502378720.

The previous prime is 663838883783. The next prime is 663838883831. The reversal of 663838883792 is 297388838366.

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 3 ways as a sum of consecutive naturals, for example, 2963566334 + ... + 2963566557.

Almost surely, 2^663838883792 is an apocalyptic number.

It is an amenable number.

663838883792 is an abundant number, since it is smaller than the sum of its proper divisors (806090073424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663838883792 is a wasteful number, since it uses less digits than its factorization.

663838883792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5927132906 (or 5927132900 counting only the distinct ones).

The product of its digits is 501645312, while the sum is 71.

The spelling of 663838883792 in words is "six hundred sixty-three billion, eight hundred thirty-eight million, eight hundred eighty-three thousand, seven hundred ninety-two".