13644052056 has 96 divisors (see below), whose sum is σ = 37585416960. Its totient is φ = 4470434496.

The previous prime is 13644052007. The next prime is 13644052061. The reversal of 13644052056 is 65025044631.

13644052056 is a `hidden beast` number, since 1 + 3 + 6 + 440 + 5 + 205 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13644052056.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2423661 + ... + 2429283.

It is an arithmetic number, because the mean of its divisors is an integer number (391514760).

Almost surely, 2^13644052056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13644052056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18792708480).

13644052056 is an abundant number, since it is smaller than the sum of its proper divisors (23941364904).

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

13644052056 is a wasteful number, since it uses less digits than its factorization.

13644052056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205 (or 6198 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 13644052056 its reverse (65025044631), we get a palindrome (78669096687).

The spelling of 13644052056 in words is "thirteen billion, six hundred forty-four million, fifty-two thousand, fifty-six".