257855088864543 has 16 divisors (see below), whose sum is σ = 345469410367200. Its totient is φ = 171072781211520.

The previous prime is 257855088864533. The next prime is 257855088864551. The reversal of 257855088864543 is 345468880558752.

It is not a de Polignac number, because 257855088864543 - 2⁹ = 257855088864031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257855088864533) 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, 86183248 + ... + 89124981.

It is an arithmetic number, because the mean of its divisors is an integer number (21591838147950).

Almost surely, 2^{257855088864543} is an apocalyptic number.

257855088864543 is a deficient number, since it is larger than the sum of its proper divisors (87614321502657).

257855088864543 is a wasteful number, since it uses less digits than its factorization.

257855088864543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175310602.

The product of its (nonzero) digits is 10321920000, while the sum is 78.

The spelling of 257855088864543 in words is "two hundred fifty-seven trillion, eight hundred fifty-five billion, eighty-eight million, eight hundred sixty-four thousand, five hundred forty-three".