255123210344321 has 16 divisors (see below), whose sum is σ = 294690280828608. Its totient is φ = 218285380684800.

The previous prime is 255123210344297. The next prime is 255123210344399. The reversal of 255123210344321 is 123443012321552.

It is not a de Polignac number, because 255123210344321 - 2¹⁸ = 255123210082177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255123210347321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16447961 + ... + 27942473.

It is an arithmetic number, because the mean of its divisors is an integer number (18418142551788).

Almost surely, 2^{255123210344321} is an apocalyptic number.

It is an amenable number.

255123210344321 is a deficient number, since it is larger than the sum of its proper divisors (39567070484287).

255123210344321 is a wasteful number, since it uses less digits than its factorization.

255123210344321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11613232.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 255123210344321 its reverse (123443012321552), we get a palindrome (378566222665873).

The spelling of 255123210344321 in words is "two hundred fifty-five trillion, one hundred twenty-three billion, two hundred ten million, three hundred forty-four thousand, three hundred twenty-one".