13813838856 has 48 divisors (see below), whose sum is σ = 37445838300. Its totient is φ = 4600507392.

The previous prime is 13813838839. The next prime is 13813838873. The reversal of 13813838856 is 65883831831.

13813838856 is a `hidden beast` number, since 138 + 1 + 383 + 88 + 56 = 666.

13813838856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13813838839) and next prime (13813838873).

It can be written as a sum of positive squares in 2 ways, for example, as 12798396900 + 1015441956 = 113130^2 + 31866^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3681 + ... + 166256.

Almost surely, 2^13813838856 is an apocalyptic number.

It is an amenable number.

13813838856 is an abundant number, since it is smaller than the sum of its proper divisors (23631999444).

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

13813838856 is a wasteful number, since it uses less digits than its factorization.

13813838856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171078 (or 171071 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 13813838856 in words is "thirteen billion, eight hundred thirteen million, eight hundred thirty-eight thousand, eight hundred fifty-six".