6538386838356 has 36 divisors (see below), whose sum is σ = 16930700882004. Its totient is φ = 2126304662400.

The previous prime is 6538386838309. The next prime is 6538386838363.

6538386838356 is a `hidden beast` number, since 6 + 538 + 3 + 8 + 6 + 8 + 3 + 83 + 5 + 6 = 666.

6538386838356 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 1079762061456 + 5458624776900 = 1039116^2 + 2336370^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2214899215 + ... + 2214902166.

Almost surely, 2^{6538386838356} is an apocalyptic number.

It is an amenable number.

6538386838356 is an abundant number, since it is smaller than the sum of its proper divisors (10392314043648).

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

6538386838356 is a wasteful number, since it uses less digits than its factorization.

6538386838356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4429801432 (or 4429801427 counting only the distinct ones).

The product of its digits is 1791590400, while the sum is 72.

The spelling of 6538386838356 in words is "six trillion, five hundred thirty-eight billion, three hundred eighty-six million, eight hundred thirty-eight thousand, three hundred fifty-six".