2661116115 has 16 divisors (see below), whose sum is σ = 4866041088. Its totient is φ = 1216510176.

The previous prime is 2661116099. The next prime is 2661116147. The reversal of 2661116115 is 5116111662.

It is not a de Polignac number, because 2661116115 - 2⁴ = 2661116099 is a prime.

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, 12671877 + ... + 12672086.

It is an arithmetic number, because the mean of its divisors is an integer number (304127568).

Almost surely, 2^2661116115 is an apocalyptic number.

2661116115 is a deficient number, since it is larger than the sum of its proper divisors (2204924973).

2661116115 is a wasteful number, since it uses less digits than its factorization.

2661116115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25343978.

The product of its digits is 2160, while the sum is 30.

The square root of 2661116115 is about 51586.0069689446. The cubic root of 2661116115 is about 1385.7597459869.

Adding to 2661116115 its reverse (5116111662), we get a palindrome (7777227777).

The spelling of 2661116115 in words is "two billion, six hundred sixty-one million, one hundred sixteen thousand, one hundred fifteen".