255154424451517 has 2 divisors, whose sum is σ = 255154424451518. Its totient is φ = 255154424451516.

The previous prime is 255154424451473. The next prime is 255154424451571. The reversal of 255154424451517 is 715154424451552.

255154424451517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (255154424451571) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213673469645476 + 41480954806041 = 14617574^2 + 6440571^2 .

It is a cyclic number.

It is not a de Polignac number, because 255154424451517 - 2³⁵ = 255120064713149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255154425451517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127577212225758 + 127577212225759.

It is an arithmetic number, because the mean of its divisors is an integer number (127577212225759).

Almost surely, 2^{255154424451517} is an apocalyptic number.

It is an amenable number.

255154424451517 is a deficient number, since it is larger than the sum of its proper divisors (1).

255154424451517 is an equidigital number, since it uses as much as digits as its factorization.

255154424451517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22400000, while the sum is 55.

The spelling of 255154424451517 in words is "two hundred fifty-five trillion, one hundred fifty-four billion, four hundred twenty-four million, four hundred fifty-one thousand, five hundred seventeen".