2516717726591 has 2 divisors, whose sum is σ = 2516717726592. Its totient is φ = 2516717726590.

The previous prime is 2516717726557. The next prime is 2516717726647. The reversal of 2516717726591 is 1956277176152.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2516717726591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2516717726591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2516710726591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258358863295 + 1258358863296.

It is an arithmetic number, because the mean of its divisors is an integer number (1258358863296).

Almost surely, 2^{2516717726591} is an apocalyptic number.

2516717726591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2516717726591 is an equidigital number, since it uses as much as digits as its factorization.

2516717726591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11113200, while the sum is 59.

The spelling of 2516717726591 in words is "two trillion, five hundred sixteen billion, seven hundred seventeen million, seven hundred twenty-six thousand, five hundred ninety-one".