13115394287 has 4 divisors (see below), whose sum is σ = 13124892696. Its totient is φ = 13105895880.

The previous prime is 13115394269. The next prime is 13115394301. The reversal of 13115394287 is 78249351131.

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 13115394287 - 2⁸ = 13115394031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13115394247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4747133 + ... + 4749894.

It is an arithmetic number, because the mean of its divisors is an integer number (3281223174).

Almost surely, 2^13115394287 is an apocalyptic number.

13115394287 is a deficient number, since it is larger than the sum of its proper divisors (9498409).

13115394287 is an equidigital number, since it uses as much as digits as its factorization.

13115394287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9498408.

The product of its digits is 181440, while the sum is 44.

The spelling of 13115394287 in words is "thirteen billion, one hundred fifteen million, three hundred ninety-four thousand, two hundred eighty-seven".