255634975806 has 32 divisors (see below), whose sum is σ = 618679607040. Its totient is φ = 68742178176.

The previous prime is 255634975801. The next prime is 255634975861. The reversal of 255634975806 is 608579436552.

It is a self number, because there is not a number n which added to its sum of digits gives 255634975806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255634975801) 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 15 ways as a sum of consecutive naturals, for example, 179015376 + ... + 179016803.

It is an arithmetic number, because the mean of its divisors is an integer number (19333737720).

Almost surely, 2^255634975806 is an apocalyptic number.

255634975806 is an abundant number, since it is smaller than the sum of its proper divisors (363044631234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255634975806 is a wasteful number, since it uses less digits than its factorization.

255634975806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358032208.

The product of its (nonzero) digits is 54432000, while the sum is 60.

The spelling of 255634975806 in words is "two hundred fifty-five billion, six hundred thirty-four million, nine hundred seventy-five thousand, eight hundred six".