13639115144 has 16 divisors (see below), whose sum is σ = 25826543820. Its totient is φ = 6752036800.

The previous prime is 13639115143. The next prime is 13639115177. The reversal of 13639115144 is 44151193631.

It can be written as a sum of positive squares in 2 ways, for example, as 13604423044 + 34692100 = 116638^2 + 5890^2 .

It is a super-2 number, since 2×13639115144² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13639115098 and 13639115107.

It is not an unprimeable number, because it can be changed into a prime (13639115141) 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, 8439239 + ... + 8440854.

Almost surely, 2^13639115144 is an apocalyptic number.

It is an amenable number.

13639115144 is a deficient number, since it is larger than the sum of its proper divisors (12187428676).

13639115144 is a wasteful number, since it uses less digits than its factorization.

13639115144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16880200 (or 16880196 counting only the distinct ones).

The product of its digits is 38880, while the sum is 38.

The spelling of 13639115144 in words is "thirteen billion, six hundred thirty-nine million, one hundred fifteen thousand, one hundred forty-four".