255503151811 has 4 divisors (see below), whose sum is σ = 259101787824. Its totient is φ = 251904515800.

The previous prime is 255503151781. The next prime is 255503151851. The reversal of 255503151811 is 118151305552.

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 255503151811 - 2²⁷ = 255368934083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255503151851) 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, 1799317900 + ... + 1799318041.

It is an arithmetic number, because the mean of its divisors is an integer number (64775446956).

Almost surely, 2^255503151811 is an apocalyptic number.

255503151811 is a deficient number, since it is larger than the sum of its proper divisors (3598636013).

255503151811 is an equidigital number, since it uses as much as digits as its factorization.

255503151811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3598636012.

The product of its (nonzero) digits is 30000, while the sum is 37.

The spelling of 255503151811 in words is "two hundred fifty-five billion, five hundred three million, one hundred fifty-one thousand, eight hundred eleven".