13115066537 has 4 divisors (see below), whose sum is σ = 13299785856. Its totient is φ = 12930347220.

The previous prime is 13115066533. The next prime is 13115066563. The reversal of 13115066537 is 73566051131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73566051131 = 66107 ⋅1112833.

It is a cyclic number.

It is not a de Polignac number, because 13115066537 - 2² = 13115066533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13115066537.

It is not an unprimeable number, because it can be changed into a prime (13115066533) 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, 92359553 + ... + 92359694.

It is an arithmetic number, because the mean of its divisors is an integer number (3324946464).

Almost surely, 2^13115066537 is an apocalyptic number.

It is an amenable number.

13115066537 is a deficient number, since it is larger than the sum of its proper divisors (184719319).

13115066537 is an equidigital number, since it uses as much as digits as its factorization.

13115066537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184719318.

The product of its (nonzero) digits is 56700, while the sum is 38.

The spelling of 13115066537 in words is "thirteen billion, one hundred fifteen million, sixty-six thousand, five hundred thirty-seven".