11917857275 has 6 divisors (see below), whose sum is σ = 14778143052. Its totient is φ = 9534285800.

The previous prime is 11917857269. The next prime is 11917857277. The reversal of 11917857275 is 57275871911.

It is not a de Polignac number, because 11917857275 - 2²⁶ = 11850748411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11917857277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 238357121 + ... + 238357170.

It is an arithmetic number, because the mean of its divisors is an integer number (2463023842).

Almost surely, 2^11917857275 is an apocalyptic number.

11917857275 is a deficient number, since it is larger than the sum of its proper divisors (2860285777).

11917857275 is an equidigital number, since it uses as much as digits as its factorization.

11917857275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476714301 (or 476714296 counting only the distinct ones).

The product of its digits is 1234800, while the sum is 53.

The spelling of 11917857275 in words is "eleven billion, nine hundred seventeen million, eight hundred fifty-seven thousand, two hundred seventy-five".