11115115018 has 24 divisors (see below), whose sum is σ = 19918930212. Its totient is φ = 4634872704.

The previous prime is 11115115009. The next prime is 11115115031. The reversal of 11115115018 is 81051151111.

It can be written as a sum of positive squares in 2 ways, for example, as 10763440009 + 351675009 = 103747^2 + 18753^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11115114983 and 11115115001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1529071 + ... + 1536322.

Almost surely, 2^11115115018 is an apocalyptic number.

11115115018 is a deficient number, since it is larger than the sum of its proper divisors (8803815194).

11115115018 is a wasteful number, since it uses less digits than its factorization.

11115115018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065446 (or 3065439 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 25.

Adding to 11115115018 its reverse (81051151111), we get a palindrome (92166266129).

The spelling of 11115115018 in words is "eleven billion, one hundred fifteen million, one hundred fifteen thousand, eighteen".