2166263004113 has 4 divisors (see below), whose sum is σ = 2332898619828. Its totient is φ = 1999627388400.

The previous prime is 2166263004097. The next prime is 2166263004181. The reversal of 2166263004113 is 3114003626612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1414213288849 + 752049715264 = 1189207^2 + 867208^2 .

It is a cyclic number.

It is not a de Polignac number, because 2166263004113 - 2⁴ = 2166263004097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2166263004193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83317807838 + ... + 83317807863.

It is an arithmetic number, because the mean of its divisors is an integer number (583224654957).

Almost surely, 2^{2166263004113} is an apocalyptic number.

It is an amenable number.

2166263004113 is a deficient number, since it is larger than the sum of its proper divisors (166635615715).

2166263004113 is a wasteful number, since it uses less digits than its factorization.

2166263004113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166635615714.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 2166263004113 in words is "two trillion, one hundred sixty-six billion, two hundred sixty-three million, four thousand, one hundred thirteen".