3638396309808 has 80 divisors (see below), whose sum is σ = 10264771512576. Its totient is φ = 1103738845440.

The previous prime is 3638396309783. The next prime is 3638396309819. The reversal of 3638396309808 is 8089036938363.

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, 41017410 + ... + 41106017.

Almost surely, 2^{3638396309808} is an apocalyptic number.

It is an amenable number.

3638396309808 is an abundant number, since it is smaller than the sum of its proper divisors (6626375202768).

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

3638396309808 is a wasteful number, since it uses less digits than its factorization.

3638396309808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82123522 (or 82123516 counting only the distinct ones).

The product of its (nonzero) digits is 120932352, while the sum is 66.

The spelling of 3638396309808 in words is "three trillion, six hundred thirty-eight billion, three hundred ninety-six million, three hundred nine thousand, eight hundred eight".