257544845983 has 2 divisors, whose sum is σ = 257544845984. Its totient is φ = 257544845982.

The previous prime is 257544845959. The next prime is 257544846017. The reversal of 257544845983 is 389548445752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257544845983 - 2¹³ = 257544837791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257544845183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128772422991 + 128772422992.

It is an arithmetic number, because the mean of its divisors is an integer number (128772422992).

Almost surely, 2^257544845983 is an apocalyptic number.

257544845983 is a deficient number, since it is larger than the sum of its proper divisors (1).

257544845983 is an equidigital number, since it uses as much as digits as its factorization.

257544845983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536000, while the sum is 64.

The spelling of 257544845983 in words is "two hundred fifty-seven billion, five hundred forty-four million, eight hundred forty-five thousand, nine hundred eighty-three".