2113623434917 has 2 divisors, whose sum is σ = 2113623434918. Its totient is φ = 2113623434916.

The previous prime is 2113623434899. The next prime is 2113623434929. The reversal of 2113623434917 is 7194343263112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1143426014721 + 970197420196 = 1069311^2 + 984986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113623434917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113623434957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056811717458 + 1056811717459.

It is an arithmetic number, because the mean of its divisors is an integer number (1056811717459).

Almost surely, 2^{2113623434917} is an apocalyptic number.

It is an amenable number.

2113623434917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113623434917 is an equidigital number, since it uses as much as digits as its factorization.

2113623434917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 46.

The spelling of 2113623434917 in words is "two trillion, one hundred thirteen billion, six hundred twenty-three million, four hundred thirty-four thousand, nine hundred seventeen".