13115907887 has 8 divisors (see below), whose sum is σ = 13320450720. Its totient is φ = 12911915520.

The previous prime is 13115907851. The next prime is 13115907899. The reversal of 13115907887 is 78870951131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13115907887 - 2¹⁰ = 13115906863 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 (13115907817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89462 + ... + 185027.

It is an arithmetic number, because the mean of its divisors is an integer number (1665056340).

Almost surely, 2^13115907887 is an apocalyptic number.

13115907887 is a deficient number, since it is larger than the sum of its proper divisors (204542833).

13115907887 is an equidigital number, since it uses as much as digits as its factorization.

13115907887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275233.

The product of its (nonzero) digits is 423360, while the sum is 50.

The spelling of 13115907887 in words is "thirteen billion, one hundred fifteen million, nine hundred seven thousand, eight hundred eighty-seven".