257246917327 has 2 divisors, whose sum is σ = 257246917328. Its totient is φ = 257246917326.

The previous prime is 257246917321. The next prime is 257246917339. The reversal of 257246917327 is 723719642752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257246917327 - 2⁷ = 257246917199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257246917321) 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, 128623458663 + 128623458664.

It is an arithmetic number, because the mean of its divisors is an integer number (128623458664).

Almost surely, 2^257246917327 is an apocalyptic number.

257246917327 is a deficient number, since it is larger than the sum of its proper divisors (1).

257246917327 is an equidigital number, since it uses as much as digits as its factorization.

257246917327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8890560, while the sum is 55.

The spelling of 257246917327 in words is "two hundred fifty-seven billion, two hundred forty-six million, nine hundred seventeen thousand, three hundred twenty-seven".