11516112321 has 16 divisors (see below), whose sum is σ = 17557501824. Its totient is φ = 6577208064.

The previous prime is 11516112319. The next prime is 11516112329. The reversal of 11516112321 is 12321161511.

It is not a de Polignac number, because 11516112321 - 2¹ = 11516112319 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11516112291 and 11516112300.

It is not an unprimeable number, because it can be changed into a prime (11516112329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101256 + ... + 182441.

It is an arithmetic number, because the mean of its divisors is an integer number (1097343864).

Almost surely, 2^11516112321 is an apocalyptic number.

It is an amenable number.

11516112321 is a deficient number, since it is larger than the sum of its proper divisors (6041389503).

11516112321 is a wasteful number, since it uses less digits than its factorization.

11516112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285640.

The product of its digits is 360, while the sum is 24.

Adding to 11516112321 its reverse (12321161511), we get a palindrome (23837273832).

The spelling of 11516112321 in words is "eleven billion, five hundred sixteen million, one hundred twelve thousand, three hundred twenty-one".