6564465539 has 2 divisors, whose sum is σ = 6564465540. Its totient is φ = 6564465538.

The previous prime is 6564465533. The next prime is 6564465541. The reversal of 6564465539 is 9355644656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6564465539 - 2⁸ = 6564465283 is a prime.

Together with 6564465541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6564465533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282232769 + 3282232770.

It is an arithmetic number, because the mean of its divisors is an integer number (3282232770).

Almost surely, 2^6564465539 is an apocalyptic number.

6564465539 is a deficient number, since it is larger than the sum of its proper divisors (1).

6564465539 is an equidigital number, since it uses as much as digits as its factorization.

6564465539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664000, while the sum is 53.

The square root of 6564465539 is about 81021.3893919377. The cubic root of 6564465539 is about 1872.4049946005.

The spelling of 6564465539 in words is "six billion, five hundred sixty-four million, four hundred sixty-five thousand, five hundred thirty-nine".