13638631168 has 18 divisors (see below), whose sum is σ = 27223986944. Its totient is φ = 6819315456.

The previous prime is 13638631151. The next prime is 13638631177. The reversal of 13638631168 is 86113683631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26637696 + ... + 26638207.

Almost surely, 2^13638631168 is an apocalyptic number.

It is an amenable number.

13638631168 is a deficient number, since it is larger than the sum of its proper divisors (13585355776).

13638631168 is an frugal number, since it uses more digits than its factorization.

13638631168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53275919 (or 53275905 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The spelling of 13638631168 in words is "thirteen billion, six hundred thirty-eight million, six hundred thirty-one thousand, one hundred sixty-eight".