13644033613 has 12 divisors (see below), whose sum is σ = 15861980320. Its totient is φ = 11496647016.

The previous prime is 13644033569. The next prime is 13644033629. The reversal of 13644033613 is 31633044631.

It is not a de Polignac number, because 13644033613 - 2⁹ = 13644033101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13644033653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255603 + ... + 304336.

Almost surely, 2^13644033613 is an apocalyptic number.

It is an amenable number.

13644033613 is a deficient number, since it is larger than the sum of its proper divisors (2217946707).

13644033613 is an frugal number, since it uses more digits than its factorization.

13644033613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560064 (or 560005 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 34.

The spelling of 13644033613 in words is "thirteen billion, six hundred forty-four million, thirty-three thousand, six hundred thirteen".