257551494719 has 2 divisors, whose sum is σ = 257551494720. Its totient is φ = 257551494718.

The previous prime is 257551494709. The next prime is 257551494743. The reversal of 257551494719 is 917494155752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257551494719 - 2¹⁶ = 257551429183 is a prime.

It is a super-2 number, since 2×257551494719² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257551494709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128775747359 + 128775747360.

It is an arithmetic number, because the mean of its divisors is an integer number (128775747360).

Almost surely, 2^257551494719 is an apocalyptic number.

257551494719 is a deficient number, since it is larger than the sum of its proper divisors (1).

257551494719 is an equidigital number, since it uses as much as digits as its factorization.

257551494719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876000, while the sum is 59.

The spelling of 257551494719 in words is "two hundred fifty-seven billion, five hundred fifty-one million, four hundred ninety-four thousand, seven hundred nineteen".