3638690634680 has 16 divisors (see below), whose sum is σ = 8187053928120. Its totient is φ = 1455476253856.

The previous prime is 3638690634653. The next prime is 3638690634703. The reversal of 3638690634680 is 864360968363.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45483632894 + ... + 45483632973.

Almost surely, 2^{3638690634680} is an apocalyptic number.

It is an amenable number.

3638690634680 is an abundant number, since it is smaller than the sum of its proper divisors (4548363293440).

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

3638690634680 is a wasteful number, since it uses less digits than its factorization.

3638690634680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90967265878 (or 90967265874 counting only the distinct ones).

The product of its (nonzero) digits is 80621568, while the sum is 62.

The spelling of 3638690634680 in words is "three trillion, six hundred thirty-eight billion, six hundred ninety million, six hundred thirty-four thousand, six hundred eighty".