255634975805 has 16 divisors (see below), whose sum is σ = 336702498624. Its totient is φ = 184775748480.

The previous prime is 255634975801. The next prime is 255634975861. The reversal of 255634975805 is 508579436552.

It is not a de Polignac number, because 255634975805 - 2² = 255634975801 is a prime.

It is a super-3 number, since 3×255634975805³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

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, 14248424 + ... + 14266353.

It is an arithmetic number, because the mean of its divisors is an integer number (21043906164).

Almost surely, 2^255634975805 is an apocalyptic number.

It is an amenable number.

255634975805 is a deficient number, since it is larger than the sum of its proper divisors (81067522819).

255634975805 is a wasteful number, since it uses less digits than its factorization.

255634975805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28514956.

The product of its (nonzero) digits is 45360000, while the sum is 59.

The spelling of 255634975805 in words is "two hundred fifty-five billion, six hundred thirty-four million, nine hundred seventy-five thousand, eight hundred five".