255126609171 has 64 divisors (see below), whose sum is σ = 445682995200. Its totient is φ = 141224923008.

The previous prime is 255126609163. The next prime is 255126609191. The reversal of 255126609171 is 171906621552.

It is a happy number.

255126609171 is a `hidden beast` number, since 2 + 5 + 5 + 1 + 26 + 609 + 17 + 1 = 666.

It is not a de Polignac number, because 255126609171 - 2³ = 255126609163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255126609191) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 630145 + ... + 952541.

It is an arithmetic number, because the mean of its divisors is an integer number (6963796800).

Almost surely, 2^255126609171 is an apocalyptic number.

255126609171 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

255126609171 is a deficient number, since it is larger than the sum of its proper divisors (190556386029).

255126609171 is a wasteful number, since it uses less digits than its factorization.

255126609171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322545 (or 322539 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 255126609171 in words is "two hundred fifty-five billion, one hundred twenty-six million, six hundred nine thousand, one hundred seventy-one".