6515673617 has 2 divisors, whose sum is σ = 6515673618. Its totient is φ = 6515673616.

The previous prime is 6515673613. The next prime is 6515673643. The reversal of 6515673617 is 7163765156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6139662736 + 376010881 = 78356^2 + 19391^2 .

It is a cyclic number.

It is not a de Polignac number, because 6515673617 - 2² = 6515673613 is a prime.

It is not a weakly prime, because it can be changed into another prime (6515673613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3257836808 + 3257836809.

It is an arithmetic number, because the mean of its divisors is an integer number (3257836809).

Almost surely, 2^6515673617 is an apocalyptic number.

It is an amenable number.

6515673617 is a deficient number, since it is larger than the sum of its proper divisors (1).

6515673617 is an equidigital number, since it uses as much as digits as its factorization.

6515673617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 793800, while the sum is 47.

The square root of 6515673617 is about 80719.7226023479. The cubic root of 6515673617 is about 1867.7544243264.

The spelling of 6515673617 in words is "six billion, five hundred fifteen million, six hundred seventy-three thousand, six hundred seventeen".