255758634128 has 20 divisors (see below), whose sum is σ = 499149382380. Its totient is φ = 126945890304.

The previous prime is 255758634127. The next prime is 255758634137. The reversal of 255758634128 is 821436857552.

It can be written as a sum of positive squares in 2 ways, for example, as 170942556304 + 84816077824 = 413452^2 + 291232^2 .

It is not an unprimeable number, because it can be changed into a prime (255758634127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58336913 + ... + 58341296.

It is an arithmetic number, because the mean of its divisors is an integer number (24957469119).

Almost surely, 2^255758634128 is an apocalyptic number.

It is an amenable number.

255758634128 is a deficient number, since it is larger than the sum of its proper divisors (243390748252).

255758634128 is a wasteful number, since it uses less digits than its factorization.

255758634128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116678354 (or 116678348 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 56.

The spelling of 255758634128 in words is "two hundred fifty-five billion, seven hundred fifty-eight million, six hundred thirty-four thousand, one hundred twenty-eight".