6560665571 has 2 divisors, whose sum is σ = 6560665572. Its totient is φ = 6560665570.

The previous prime is 6560665549. The next prime is 6560665589. The reversal of 6560665571 is 1755660656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6560665571 - 2¹⁴ = 6560649187 is a prime.

It is not a weakly prime, because it can be changed into another prime (6560665511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280332785 + 3280332786.

It is an arithmetic number, because the mean of its divisors is an integer number (3280332786).

Almost surely, 2^6560665571 is an apocalyptic number.

6560665571 is a deficient number, since it is larger than the sum of its proper divisors (1).

6560665571 is an equidigital number, since it uses as much as digits as its factorization.

6560665571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The square root of 6560665571 is about 80997.9355971496. The cubic root of 6560665571 is about 1872.0436322340.

The spelling of 6560665571 in words is "six billion, five hundred sixty million, six hundred sixty-five thousand, five hundred seventy-one".