256299295999 has 2 divisors, whose sum is σ = 256299296000. Its totient is φ = 256299295998.

The previous prime is 256299295933. The next prime is 256299296041. The reversal of 256299295999 is 999592992652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256299295999 - 2¹¹ = 256299293951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256299205999) 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, 128149647999 + 128149648000.

It is an arithmetic number, because the mean of its divisors is an integer number (128149648000).

Almost surely, 2^256299295999 is an apocalyptic number.

256299295999 is a deficient number, since it is larger than the sum of its proper divisors (1).

256299295999 is an equidigital number, since it uses as much as digits as its factorization.

256299295999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 637729200, while the sum is 76.

The spelling of 256299295999 in words is "two hundred fifty-six billion, two hundred ninety-nine million, two hundred ninety-five thousand, nine hundred ninety-nine".