2116512231345 has 96 divisors (see below), whose sum is σ = 3839637634560. Its totient is φ = 1077400135680.

The previous prime is 2116512231311. The next prime is 2116512231359. The reversal of 2116512231345 is 5431322156112.

2116512231345 is a `hidden beast` number, since 2 + 1 + 1 + 6 + 512 + 2 + 3 + 134 + 5 = 666.

It is not a de Polignac number, because 2116512231345 - 2⁸ = 2116512231089 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 358910437 + ... + 358916333.

It is an arithmetic number, because the mean of its divisors is an integer number (39996225360).

Almost surely, 2^{2116512231345} is an apocalyptic number.

It is an amenable number.

2116512231345 is a deficient number, since it is larger than the sum of its proper divisors (1723125403215).

2116512231345 is a wasteful number, since it uses less digits than its factorization.

2116512231345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135 (or 10132 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 2116512231345 its reverse (5431322156112), we get a palindrome (7547834387457).

The spelling of 2116512231345 in words is "two trillion, one hundred sixteen billion, five hundred twelve million, two hundred thirty-one thousand, three hundred forty-five".