13857418836 has 72 divisors (see below), whose sum is σ = 35427111720. Its totient is φ = 4566675456.

The previous prime is 13857418831. The next prime is 13857418837. The reversal of 13857418836 is 63881475831.

It is a happy number.

13857418836 is a `hidden beast` number, since 1 + 38 + 574 + 1 + 8 + 8 + 36 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 98128836 + 13759290000 = 9906^2 + 117300^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13857418831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4988680 + ... + 4991456.

Almost surely, 2^13857418836 is an apocalyptic number.

It is an amenable number.

13857418836 is an abundant number, since it is smaller than the sum of its proper divisors (21569692884).

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

13857418836 is a wasteful number, since it uses less digits than its factorization.

13857418836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4313 (or 4308 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 13857418836 in words is "thirteen billion, eight hundred fifty-seven million, four hundred eighteen thousand, eight hundred thirty-six".