255085638811 has 4 divisors (see below), whose sum is σ = 255349430512. Its totient is φ = 254821847112.

The previous prime is 255085638791. The next prime is 255085638817. The reversal of 255085638811 is 118836580552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255085638811 - 2⁵ = 255085638779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255085638817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131894400 + ... + 131896333.

It is an arithmetic number, because the mean of its divisors is an integer number (63837357628).

Almost surely, 2^255085638811 is an apocalyptic number.

255085638811 is a deficient number, since it is larger than the sum of its proper divisors (263791701).

255085638811 is an equidigital number, since it uses as much as digits as its factorization.

255085638811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263791700.

The product of its (nonzero) digits is 2304000, while the sum is 52.

The spelling of 255085638811 in words is "two hundred fifty-five billion, eighty-five million, six hundred thirty-eight thousand, eight hundred eleven".