6517497563 has 2 divisors, whose sum is σ = 6517497564. Its totient is φ = 6517497562.

The previous prime is 6517497541. The next prime is 6517497577. The reversal of 6517497563 is 3657947156.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6517497563 - 2⁶ = 6517497499 is a prime.

It is not a weakly prime, because it can be changed into another prime (6517497593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3258748781 + 3258748782.

It is an arithmetic number, because the mean of its divisors is an integer number (3258748782).

Almost surely, 2^6517497563 is an apocalyptic number.

6517497563 is a deficient number, since it is larger than the sum of its proper divisors (1).

6517497563 is an equidigital number, since it uses as much as digits as its factorization.

6517497563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4762800, while the sum is 53.

The square root of 6517497563 is about 80731.0198312891. The cubic root of 6517497563 is about 1867.9286895204.

The spelling of 6517497563 in words is "six billion, five hundred seventeen million, four hundred ninety-seven thousand, five hundred sixty-three".