11117806915 has 4 divisors (see below), whose sum is σ = 13341368304. Its totient is φ = 8894245528.

The previous prime is 11117806891. The next prime is 11117806933. The reversal of 11117806915 is 51960871111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51960871111 = 62791 ⋅827521.

It is a cyclic number.

It is not a de Polignac number, because 11117806915 - 2⁷ = 11117806787 is a prime.

It is a super-3 number, since 3×11117806915³ (a number of 31 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111780687 + ... + 1111780696.

It is an arithmetic number, because the mean of its divisors is an integer number (3335342076).

Almost surely, 2^11117806915 is an apocalyptic number.

11117806915 is a deficient number, since it is larger than the sum of its proper divisors (2223561389).

11117806915 is an equidigital number, since it uses as much as digits as its factorization.

11117806915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223561388.

The product of its (nonzero) digits is 15120, while the sum is 40.

The spelling of 11117806915 in words is "eleven billion, one hundred seventeen million, eight hundred six thousand, nine hundred fifteen".