2116624665 has 64 divisors (see below), whose sum is σ = 3606626304. Its totient is φ = 1058400000.

The previous prime is 2116624663. The next prime is 2116624667. The reversal of 2116624665 is 5664266112.

It is an interprime number because it is at equal distance from previous prime (2116624663) and next prime (2116624667).

It is not a de Polignac number, because 2116624665 - 2¹ = 2116624663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2116624663) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2013390 + ... + 2014440.

It is an arithmetic number, because the mean of its divisors is an integer number (56353536).

Almost surely, 2^2116624665 is an apocalyptic number.

It is an amenable number.

2116624665 is a deficient number, since it is larger than the sum of its proper divisors (1490001639).

2116624665 is a wasteful number, since it uses less digits than its factorization.

2116624665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222.

The product of its digits is 103680, while the sum is 39.

The square root of 2116624665 is about 46006.7893359230. The cubic root of 2116624665 is about 1283.9495247818.

The spelling of 2116624665 in words is "two billion, one hundred sixteen million, six hundred twenty-four thousand, six hundred sixty-five".