13115744439 has 8 divisors (see below), whose sum is σ = 19985896320. Its totient is φ = 7494711096.

The previous prime is 13115744431. The next prime is 13115744449. The reversal of 13115744439 is 93444751131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13115744439 - 2³ = 13115744431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13115744439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13115744431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312279609 + ... + 312279650.

It is an arithmetic number, because the mean of its divisors is an integer number (2498237040).

Almost surely, 2^13115744439 is an apocalyptic number.

13115744439 is a deficient number, since it is larger than the sum of its proper divisors (6870151881).

13115744439 is an equidigital number, since it uses as much as digits as its factorization.

13115744439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624559269.

The product of its digits is 181440, while the sum is 42.

The spelling of 13115744439 in words is "thirteen billion, one hundred fifteen million, seven hundred forty-four thousand, four hundred thirty-nine".