256241900503 has 2 divisors, whose sum is σ = 256241900504. Its totient is φ = 256241900502.

The previous prime is 256241900501. The next prime is 256241900539. The reversal of 256241900503 is 305009142652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256241900503 - 2¹ = 256241900501 is a prime.

Together with 256241900501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256241900501) 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, 128120950251 + 128120950252.

It is an arithmetic number, because the mean of its divisors is an integer number (128120950252).

Almost surely, 2^256241900503 is an apocalyptic number.

256241900503 is a deficient number, since it is larger than the sum of its proper divisors (1).

256241900503 is an equidigital number, since it uses as much as digits as its factorization.

256241900503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 256241900503 in words is "two hundred fifty-six billion, two hundred forty-one million, nine hundred thousand, five hundred three".