63976665996 has 48 divisors (see below), whose sum is σ = 165882286080. Its totient is φ = 21323388240.

The previous prime is 63976665943. The next prime is 63976666003. The reversal of 63976665996 is 69956667936.

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, 1314325 + ... + 1362131.

It is an arithmetic number, because the mean of its divisors is an integer number (3455880960).

Almost surely, 2^63976665996 is an apocalyptic number.

It is an amenable number.

63976665996 is an abundant number, since it is smaller than the sum of its proper divisors (101905620084).

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

63976665996 is a wasteful number, since it uses less digits than its factorization.

63976665996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60211 (or 60203 counting only the distinct ones).

The product of its digits is 595213920, while the sum is 72.

The spelling of 63976665996 in words is "sixty-three billion, nine hundred seventy-six million, six hundred sixty-five thousand, nine hundred ninety-six".