257844583055 has 16 divisors (see below), whose sum is σ = 336468738240. Its totient is φ = 188894725632.

The previous prime is 257844583043. The next prime is 257844583057. The reversal of 257844583055 is 550385448752.

It is a cyclic number.

It is not a de Polignac number, because 257844583055 - 2⁶ = 257844582991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257844583057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40989635 + ... + 40995924.

It is an arithmetic number, because the mean of its divisors is an integer number (21029296140).

Almost surely, 2^257844583055 is an apocalyptic number.

257844583055 is a deficient number, since it is larger than the sum of its proper divisors (78624155185).

257844583055 is a wasteful number, since it uses less digits than its factorization.

257844583055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81985618.

The product of its (nonzero) digits is 26880000, while the sum is 56.

The spelling of 257844583055 in words is "two hundred fifty-seven billion, eight hundred forty-four million, five hundred eighty-three thousand, fifty-five".