13115729759 has 4 divisors (see below), whose sum is σ = 14308068840. Its totient is φ = 11923390680.

The previous prime is 13115729749. The next prime is 13115729779. The reversal of 13115729759 is 95792751131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13115729759 - 2²⁰ = 13114681183 is a prime.

It is a super-2 number, since 2×13115729759² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13115729749) 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, 596169524 + ... + 596169545.

It is an arithmetic number, because the mean of its divisors is an integer number (3577017210).

Almost surely, 2^13115729759 is an apocalyptic number.

13115729759 is a deficient number, since it is larger than the sum of its proper divisors (1192339081).

13115729759 is a wasteful number, since it uses less digits than its factorization.

13115729759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192339080.

The product of its digits is 595350, while the sum is 50.

The spelling of 13115729759 in words is "thirteen billion, one hundred fifteen million, seven hundred twenty-nine thousand, seven hundred fifty-nine".