13538456856 has 64 divisors (see below), whose sum is σ = 37729507200. Its totient is φ = 4498097184.

The previous prime is 13538456797. The next prime is 13538456873. The reversal of 13538456856 is 65865483531.

It is a happy number.

13538456856 is a `hidden beast` number, since 1 + 3 + 538 + 4 + 56 + 8 + 56 = 666.

13538456856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 35770 + ... + 168393.

It is an arithmetic number, because the mean of its divisors is an integer number (589523550).

Almost surely, 2^13538456856 is an apocalyptic number.

It is an amenable number.

13538456856 is an abundant number, since it is smaller than the sum of its proper divisors (24191050344).

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

13538456856 is a wasteful number, since it uses less digits than its factorization.

13538456856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204485 (or 204475 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 54.

The spelling of 13538456856 in words is "thirteen billion, five hundred thirty-eight million, four hundred fifty-six thousand, eight hundred fifty-six".