11115132015123 has 6 divisors (see below), whose sum is σ = 16055190688524. Its totient is φ = 7410088010076.

The previous prime is 11115132015109. The next prime is 11115132015167. The reversal of 11115132015123 is 32151023151111.

11115132015123 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 513 + 20 + 1 + 5 + 123 = 666.

It is not a de Polignac number, because 11115132015123 - 2⁸ = 11115132014867 is a prime.

It is a super-2 number, since 2×11115132015123² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11115132017123) 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, 617507334165 + ... + 617507334182.

It is an arithmetic number, because the mean of its divisors is an integer number (2675865114754).

Almost surely, 2^{11115132015123} is an apocalyptic number.

11115132015123 is a deficient number, since it is larger than the sum of its proper divisors (4940058673401).

11115132015123 is a wasteful number, since it uses less digits than its factorization.

11115132015123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235014668353 (or 1235014668350 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

Adding to 11115132015123 its reverse (32151023151111), we get a palindrome (43266155166234).

The spelling of 11115132015123 in words is "eleven trillion, one hundred fifteen billion, one hundred thirty-two million, fifteen thousand, one hundred twenty-three".