255206743247 has 2 divisors, whose sum is σ = 255206743248. Its totient is φ = 255206743246.

The previous prime is 255206743219. The next prime is 255206743249. The reversal of 255206743247 is 742347602552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255206743247 - 2⁸ = 255206742991 is a prime.

Together with 255206743249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255206743249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127603371623 + 127603371624.

It is an arithmetic number, because the mean of its divisors is an integer number (127603371624).

Almost surely, 2^255206743247 is an apocalyptic number.

255206743247 is a deficient number, since it is larger than the sum of its proper divisors (1).

255206743247 is an equidigital number, since it uses as much as digits as its factorization.

255206743247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2822400, while the sum is 47.

The spelling of 255206743247 in words is "two hundred fifty-five billion, two hundred six million, seven hundred forty-three thousand, two hundred forty-seven".