259999626863 has 2 divisors, whose sum is σ = 259999626864. Its totient is φ = 259999626862.

The previous prime is 259999626857. The next prime is 259999626871. The reversal of 259999626863 is 368626999952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 259999626863 - 2²⁸ = 259731191407 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259999026863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129999813431 + 129999813432.

It is an arithmetic number, because the mean of its divisors is an integer number (129999813432).

Almost surely, 2^259999626863 is an apocalyptic number.

259999626863 is a deficient number, since it is larger than the sum of its proper divisors (1).

259999626863 is an equidigital number, since it uses as much as digits as its factorization.

259999626863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 680244480, while the sum is 74.

The spelling of 259999626863 in words is "two hundred fifty-nine billion, nine hundred ninety-nine million, six hundred twenty-six thousand, eight hundred sixty-three".