257139886558 has 16 divisors (see below), whose sum is σ = 392264109360. Its totient is φ = 126385370496.

The previous prime is 257139886529. The next prime is 257139886561. The reversal of 257139886558 is 855688931752.

It is a super-2 number, since 2×257139886558² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 257139886493 and 257139886502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5226160 + ... + 5275132.

It is an arithmetic number, because the mean of its divisors is an integer number (24516506835).

Almost surely, 2^257139886558 is an apocalyptic number.

257139886558 is a deficient number, since it is larger than the sum of its proper divisors (135124222802).

257139886558 is a wasteful number, since it uses less digits than its factorization.

257139886558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93531.

The product of its digits is 145152000, while the sum is 67.

The spelling of 257139886558 in words is "two hundred fifty-seven billion, one hundred thirty-nine million, eight hundred eighty-six thousand, five hundred fifty-eight".