257557830559 has 2 divisors, whose sum is σ = 257557830560. Its totient is φ = 257557830558.

The previous prime is 257557830553. The next prime is 257557830571. The reversal of 257557830559 is 955038755752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257557830559 - 2²³ = 257549441951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 257557830497 and 257557830506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257557830553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128778915279 + 128778915280.

It is an arithmetic number, because the mean of its divisors is an integer number (128778915280).

Almost surely, 2^257557830559 is an apocalyptic number.

257557830559 is a deficient number, since it is larger than the sum of its proper divisors (1).

257557830559 is an equidigital number, since it uses as much as digits as its factorization.

257557830559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66150000, while the sum is 61.

The spelling of 257557830559 in words is "two hundred fifty-seven billion, five hundred fifty-seven million, eight hundred thirty thousand, five hundred fifty-nine".