3638821113582 has 16 divisors (see below), whose sum is σ = 7594061454720. Its totient is φ = 1160203833272.

The previous prime is 3638821113539. The next prime is 3638821113607. The reversal of 3638821113582 is 2853111288363.

It is a happy number.

It is a congruent number.

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, 13184134332 + ... + 13184134607.

It is an arithmetic number, because the mean of its divisors is an integer number (474628840920).

Almost surely, 2^{3638821113582} is an apocalyptic number.

3638821113582 is an abundant number, since it is smaller than the sum of its proper divisors (3955240341138).

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

3638821113582 is a wasteful number, since it uses less digits than its factorization.

3638821113582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26368268967.

The product of its digits is 1658880, while the sum is 51.

The spelling of 3638821113582 in words is "three trillion, six hundred thirty-eight billion, eight hundred twenty-one million, one hundred thirteen thousand, five hundred eighty-two".