256241900567 has 2 divisors, whose sum is σ = 256241900568. Its totient is φ = 256241900566.

The previous prime is 256241900539. The next prime is 256241900569. The reversal of 256241900567 is 765009142652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256241900567 - 2⁶ = 256241900503 is a prime.

Together with 256241900569, 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 (256241900569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128120950283 + 128120950284.

It is an arithmetic number, because the mean of its divisors is an integer number (128120950284).

Almost surely, 2^256241900567 is an apocalyptic number.

256241900567 is a deficient number, since it is larger than the sum of its proper divisors (1).

256241900567 is an equidigital number, since it uses as much as digits as its factorization.

256241900567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 256241900567 in words is "two hundred fifty-six billion, two hundred forty-one million, nine hundred thousand, five hundred sixty-seven".