11515375975 has 6 divisors (see below), whose sum is σ = 14279066240. Its totient is φ = 9212300760.

The previous prime is 11515375967. The next prime is 11515375981. The reversal of 11515375975 is 57957351511.

It is a happy number.

It is not a de Polignac number, because 11515375975 - 2³ = 11515375967 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 230307495 + ... + 230307544.

Almost surely, 2^11515375975 is an apocalyptic number.

11515375975 is a deficient number, since it is larger than the sum of its proper divisors (2763690265).

11515375975 is an equidigital number, since it uses as much as digits as its factorization.

11515375975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460615049 (or 460615044 counting only the distinct ones).

The product of its digits is 826875, while the sum is 49.

The spelling of 11515375975 in words is "eleven billion, five hundred fifteen million, three hundred seventy-five thousand, nine hundred seventy-five".