2643268559 has 2 divisors, whose sum is σ = 2643268560. Its totient is φ = 2643268558.

The previous prime is 2643268519. The next prime is 2643268561. The reversal of 2643268559 is 9558623462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2643268559 - 2²⁸ = 2374833103 is a prime.

It is a Sophie Germain prime.

Together with 2643268561, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2643268519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321634279 + 1321634280.

It is an arithmetic number, because the mean of its divisors is an integer number (1321634280).

Almost surely, 2^2643268559 is an apocalyptic number.

2643268559 is a deficient number, since it is larger than the sum of its proper divisors (1).

2643268559 is an equidigital number, since it uses as much as digits as its factorization.

2643268559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3110400, while the sum is 50.

The square root of 2643268559 is about 51412.7275973567. The cubic root of 2643268559 is about 1382.6547927399.

The spelling of 2643268559 in words is "two billion, six hundred forty-three million, two hundred sixty-eight thousand, five hundred fifty-nine".