2116644523 has 12 divisors (see below), whose sum is σ = 2471387760. Its totient is φ = 1807510992.

The previous prime is 2116644493. The next prime is 2116644527. The reversal of 2116644523 is 3254466112.

It is a de Polignac number, because none of the positive numbers 2^k-2116644523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2116644527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67111 + ... + 93472.

It is an arithmetic number, because the mean of its divisors is an integer number (205948980).

Almost surely, 2^2116644523 is an apocalyptic number.

2116644523 is a deficient number, since it is larger than the sum of its proper divisors (354743237).

2116644523 is a wasteful number, since it uses less digits than its factorization.

2116644523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160866 (or 160859 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 2116644523 is about 46007.0051513897. The cubic root of 2116644523 is about 1283.9535400725.

The spelling of 2116644523 in words is "two billion, one hundred sixteen million, six hundred forty-four thousand, five hundred twenty-three".