13638332036 has 24 divisors (see below), whose sum is σ = 27357622656. Its totient is φ = 5827651200.

The previous prime is 13638332023. The next prime is 13638332041. The reversal of 13638332036 is 63023383631.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713240 + ... + 732111.

It is an arithmetic number, because the mean of its divisors is an integer number (1139900944).

Almost surely, 2^13638332036 is an apocalyptic number.

It is an amenable number.

13638332036 is an abundant number, since it is smaller than the sum of its proper divisors (13719290620).

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

13638332036 is a wasteful number, since it uses less digits than its factorization.

13638332036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445699 (or 1445697 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 13638332036 in words is "thirteen billion, six hundred thirty-eight million, three hundred thirty-two thousand, thirty-six".