2116511413165 has 128 divisors (see below), whose sum is σ = 2967072768000. Its totient is φ = 1440293944320.

The previous prime is 2116511413151. The next prime is 2116511413183. The reversal of 2116511413165 is 5613141156112.

It is not a de Polignac number, because 2116511413165 - 2¹¹ = 2116511411117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 433975707 + ... + 433980583.

It is an arithmetic number, because the mean of its divisors is an integer number (23180256000).

Almost surely, 2^{2116511413165} is an apocalyptic number.

It is an amenable number.

2116511413165 is a deficient number, since it is larger than the sum of its proper divisors (850561354835).

2116511413165 is a wasteful number, since it uses less digits than its factorization.

2116511413165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5147.

The product of its digits is 21600, while the sum is 37.

Adding to 2116511413165 its reverse (5613141156112), we get a palindrome (7729652569277).

The spelling of 2116511413165 in words is "two trillion, one hundred sixteen billion, five hundred eleven million, four hundred thirteen thousand, one hundred sixty-five".