11164121815 has 16 divisors (see below), whose sum is σ = 16702686720. Its totient is φ = 6959452320.

The previous prime is 11164121807. The next prime is 11164121849. The reversal of 11164121815 is 51812146111.

It is not a de Polignac number, because 11164121815 - 2³ = 11164121807 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14498475 + ... + 14499244.

It is an arithmetic number, because the mean of its divisors is an integer number (1043917920).

Almost surely, 2^11164121815 is an apocalyptic number.

11164121815 is a deficient number, since it is larger than the sum of its proper divisors (5538564905).

11164121815 is a wasteful number, since it uses less digits than its factorization.

11164121815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28997742.

The product of its digits is 1920, while the sum is 31.

Adding to 11164121815 its reverse (51812146111), we get a palindrome (62976267926).

The spelling of 11164121815 in words is "eleven billion, one hundred sixty-four million, one hundred twenty-one thousand, eight hundred fifteen".