13113491515 has 16 divisors (see below), whose sum is σ = 16423617600. Its totient is φ = 10032688512.

The previous prime is 13113491513. The next prime is 13113491519. The reversal of 13113491515 is 51519431131.

It is a cyclic number.

It is not a de Polignac number, because 13113491515 - 2¹ = 13113491513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13113491513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874501 + ... + 889369.

It is an arithmetic number, because the mean of its divisors is an integer number (1026476100).

Almost surely, 2^13113491515 is an apocalyptic number.

13113491515 is a deficient number, since it is larger than the sum of its proper divisors (3310126085).

13113491515 is a wasteful number, since it uses less digits than its factorization.

13113491515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22566.

The product of its digits is 8100, while the sum is 34.

The spelling of 13113491515 in words is "thirteen billion, one hundred thirteen million, four hundred ninety-one thousand, five hundred fifteen".