13644131113 has 4 divisors (see below), whose sum is σ = 13694853060. Its totient is φ = 13593409168.

The previous prime is 13644131101. The next prime is 13644131129. The reversal of 13644131113 is 31113144631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31113144631 = 67 ⋅464375293.

It can be written as a sum of positive squares in 2 ways, for example, as 375855769 + 13268275344 = 19387^2 + 115188^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13644131113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13644131143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25360570 + ... + 25361107.

It is an arithmetic number, because the mean of its divisors is an integer number (3423713265).

Almost surely, 2^13644131113 is an apocalyptic number.

It is an amenable number.

13644131113 is a deficient number, since it is larger than the sum of its proper divisors (50721947).

13644131113 is an equidigital number, since it uses as much as digits as its factorization.

13644131113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50721946.

The product of its digits is 2592, while the sum is 28.

Adding to 13644131113 its reverse (31113144631), we get a palindrome (44757275744).

The spelling of 13644131113 in words is "thirteen billion, six hundred forty-four million, one hundred thirty-one thousand, one hundred thirteen".