2116623615 has 32 divisors (see below), whose sum is σ = 3539137536. Its totient is φ = 1079137920.

The previous prime is 2116623589. The next prime is 2116623629. The reversal of 2116623615 is 5163266112.

It is not a de Polignac number, because 2116623615 - 2⁵ = 2116623583 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4596 + ... + 65225.

It is an arithmetic number, because the mean of its divisors is an integer number (110598048).

Almost surely, 2^2116623615 is an apocalyptic number.

2116623615 is a deficient number, since it is larger than the sum of its proper divisors (1422513921).

2116623615 is a wasteful number, since it uses less digits than its factorization.

2116623615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69919.

The product of its digits is 12960, while the sum is 33.

The square root of 2116623615 is about 46006.7779245624. Note that the first 3 decimals coincide. The cubic root of 2116623615 is about 1283.9493124710.

Adding to 2116623615 its reverse (5163266112), we get a palindrome (7279889727).

The spelling of 2116623615 in words is "two billion, one hundred sixteen million, six hundred twenty-three thousand, six hundred fifteen".