255811867595 has 16 divisors (see below), whose sum is σ = 326267984640. Its totient is φ = 191996145504.

The previous prime is 255811867561. The next prime is 255811867609. The reversal of 255811867595 is 595768118552.

It is a cyclic number.

It is not a de Polignac number, because 255811867595 - 2¹⁸ = 255811605451 is a prime.

It is a super-2 number, since 2×255811867595² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13061849 + ... + 13081418.

It is an arithmetic number, because the mean of its divisors is an integer number (20391749040).

Almost surely, 2^255811867595 is an apocalyptic number.

255811867595 is a deficient number, since it is larger than the sum of its proper divisors (70456117045).

255811867595 is a wasteful number, since it uses less digits than its factorization.

255811867595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26143394.

The product of its digits is 30240000, while the sum is 62.

The spelling of 255811867595 in words is "two hundred fifty-five billion, eight hundred eleven million, eight hundred sixty-seven thousand, five hundred ninety-five".