13664871744 has 112 divisors (see below), whose sum is σ = 38868096000. Its totient is φ = 4223356416.

The previous prime is 13664871739. The next prime is 13664871811. The reversal of 13664871744 is 44717846631.

It is a happy number.

13664871744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 131607 + ... + 211305.

Almost surely, 2^13664871744 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 13664871744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19434048000).

13664871744 is an abundant number, since it is smaller than the sum of its proper divisors (25203224256).

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

13664871744 is a wasteful number, since it uses less digits than its factorization.

13664871744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79780 (or 79770 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 51.

The spelling of 13664871744 in words is "thirteen billion, six hundred sixty-four million, eight hundred seventy-one thousand, seven hundred forty-four".