13515097539 has 16 divisors (see below), whose sum is σ = 18205712928. Its totient is φ = 8917665792.

The previous prime is 13515097513. The next prime is 13515097619. The reversal of 13515097539 is 93579051531.

It is not a de Polignac number, because 13515097539 - 2⁸ = 13515097283 is a prime.

It is a super-2 number, since 2×13515097539² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13515097439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89719 + ... + 187295.

It is an arithmetic number, because the mean of its divisors is an integer number (1137857058).

Almost surely, 2^13515097539 is an apocalyptic number.

13515097539 is a deficient number, since it is larger than the sum of its proper divisors (4690615389).

13515097539 is a wasteful number, since it uses less digits than its factorization.

13515097539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98054.

The product of its (nonzero) digits is 637875, while the sum is 48.

The spelling of 13515097539 in words is "thirteen billion, five hundred fifteen million, ninety-seven thousand, five hundred thirty-nine".