13644812256 has 48 divisors (see below), whose sum is σ = 35829895248. Its totient is φ = 4546713600.

The previous prime is 13644812249. The next prime is 13644812299. The reversal of 13644812256 is 65221844631.

It is a tau number, because it is divible by the number of its divisors (48).

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, 276846 + ... + 322386.

It is an arithmetic number, because the mean of its divisors is an integer number (746456151).

Almost surely, 2^13644812256 is an apocalyptic number.

13644812256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13644812256 is an abundant number, since it is smaller than the sum of its proper divisors (22185082992).

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

13644812256 is a wasteful number, since it uses less digits than its factorization.

13644812256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48675 (or 48667 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The spelling of 13644812256 in words is "thirteen billion, six hundred forty-four million, eight hundred twelve thousand, two hundred fifty-six".