255433443081685 has 64 divisors (see below), whose sum is σ = 340395281280000. Its totient is φ = 182437497308160.

The previous prime is 255433443081667. The next prime is 255433443081703. The reversal of 255433443081685 is 586180344334552.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (255433443081667) and next prime (255433443081703).

It is not a de Polignac number, because 255433443081685 - 2⁴⁷ = 114695954726357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15453645501 + ... + 15453662029.

It is an arithmetic number, because the mean of its divisors is an integer number (5318676270000).

Almost surely, 2^{255433443081685} is an apocalyptic number.

It is an amenable number.

255433443081685 is a deficient number, since it is larger than the sum of its proper divisors (84961838198315).

255433443081685 is a wasteful number, since it uses less digits than its factorization.

255433443081685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21106.

The product of its (nonzero) digits is 165888000, while the sum is 61.

The spelling of 255433443081685 in words is "two hundred fifty-five trillion, four hundred thirty-three billion, four hundred forty-three million, eighty-one thousand, six hundred eighty-five".