255585330813 has 4 divisors (see below), whose sum is σ = 340780441088. Its totient is φ = 170390220540.

The previous prime is 255585330811. The next prime is 255585330817. The reversal of 255585330813 is 318033585552.

255585330813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 255585330813 - 2¹ = 255585330811 is a prime.

It is a super-3 number, since 3×255585330813³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255585330811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42597555133 + ... + 42597555138.

It is an arithmetic number, because the mean of its divisors is an integer number (85195110272).

Almost surely, 2^255585330813 is an apocalyptic number.

It is an amenable number.

255585330813 is a deficient number, since it is larger than the sum of its proper divisors (85195110275).

255585330813 is an equidigital number, since it uses as much as digits as its factorization.

255585330813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85195110274.

The product of its (nonzero) digits is 2160000, while the sum is 48.

The spelling of 255585330813 in words is "two hundred fifty-five billion, five hundred eighty-five million, three hundred thirty thousand, eight hundred thirteen".