256330543099 has 2 divisors, whose sum is σ = 256330543100. Its totient is φ = 256330543098.

The previous prime is 256330543039. The next prime is 256330543141. The reversal of 256330543099 is 990345033652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256330543099 - 2²⁹ = 255793672187 is a prime.

It is not a weakly prime, because it can be changed into another prime (256330543039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128165271549 + 128165271550.

It is an arithmetic number, because the mean of its divisors is an integer number (128165271550).

Almost surely, 2^256330543099 is an apocalyptic number.

256330543099 is a deficient number, since it is larger than the sum of its proper divisors (1).

256330543099 is an equidigital number, since it uses as much as digits as its factorization.

256330543099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2624400, while the sum is 49.

The spelling of 256330543099 in words is "two hundred fifty-six billion, three hundred thirty million, five hundred forty-three thousand, ninety-nine".