255044230455221 has 12 divisors (see below), whose sum is σ = 263547463885056. Its totient is φ = 246807064508760.

The previous prime is 255044230455169. The next prime is 255044230455241. The reversal of 255044230455221 is 122554032440552.

It is a de Polignac number, because none of the positive numbers 2^k-255044230455221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255044230455241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18607916 + ... + 29263338.

It is an arithmetic number, because the mean of its divisors is an integer number (21962288657088).

Almost surely, 2^{255044230455221} is an apocalyptic number.

It is an amenable number.

255044230455221 is a deficient number, since it is larger than the sum of its proper divisors (8503233429835).

255044230455221 is a wasteful number, since it uses less digits than its factorization.

255044230455221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10680392 (or 10680361 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 44.

Adding to 255044230455221 its reverse (122554032440552), we get a palindrome (377598262895773).

The spelling of 255044230455221 in words is "two hundred fifty-five trillion, forty-four billion, two hundred thirty million, four hundred fifty-five thousand, two hundred twenty-one".