2516123917 has 2 divisors, whose sum is σ = 2516123918. Its totient is φ = 2516123916.

The previous prime is 2516123899. The next prime is 2516123927. The reversal of 2516123917 is 7193216152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2513117161 + 3006756 = 50131^2 + 1734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2516123917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2516123927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258061958 + 1258061959.

It is an arithmetic number, because the mean of its divisors is an integer number (1258061959).

Almost surely, 2^2516123917 is an apocalyptic number.

It is an amenable number.

2516123917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2516123917 is an equidigital number, since it uses as much as digits as its factorization.

2516123917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The square root of 2516123917 is about 50160.9800243177. The cubic root of 2516123917 is about 1360.1203607793.

The spelling of 2516123917 in words is "two billion, five hundred sixteen million, one hundred twenty-three thousand, nine hundred seventeen".