256241900539 has 2 divisors, whose sum is σ = 256241900540. Its totient is φ = 256241900538.

The previous prime is 256241900503. The next prime is 256241900567. The reversal of 256241900539 is 935009142652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256241900539 is a prime.

It is not a weakly prime, because it can be changed into another prime (256241900569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128120950269 + 128120950270.

It is an arithmetic number, because the mean of its divisors is an integer number (128120950270).

Almost surely, 2^256241900539 is an apocalyptic number.

256241900539 is a deficient number, since it is larger than the sum of its proper divisors (1).

256241900539 is an equidigital number, since it uses as much as digits as its factorization.

256241900539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 256241900539 in words is "two hundred fifty-six billion, two hundred forty-one million, nine hundred thousand, five hundred thirty-nine".