255603331213 has 2 divisors, whose sum is σ = 255603331214. Its totient is φ = 255603331212.

The previous prime is 255603331171. The next prime is 255603331253. The reversal of 255603331213 is 312133306552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179248930884 + 76354400329 = 423378^2 + 276323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255603331213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255603331253) 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 as a sum of consecutive naturals, namely, 127801665606 + 127801665607.

It is an arithmetic number, because the mean of its divisors is an integer number (127801665607).

Almost surely, 2^255603331213 is an apocalyptic number.

It is an amenable number.

255603331213 is a deficient number, since it is larger than the sum of its proper divisors (1).

255603331213 is an equidigital number, since it uses as much as digits as its factorization.

255603331213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 34.

Adding to 255603331213 its reverse (312133306552), we get a palindrome (567736637765).

The spelling of 255603331213 in words is "two hundred fifty-five billion, six hundred three million, three hundred thirty-one thousand, two hundred thirteen".