255355433871943 has 2 divisors, whose sum is σ = 255355433871944. Its totient is φ = 255355433871942.

The previous prime is 255355433871817. The next prime is 255355433871953. The reversal of 255355433871943 is 349178334553552.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255355433871943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255355433871953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127677716935971 + 127677716935972.

It is an arithmetic number, because the mean of its divisors is an integer number (127677716935972).

Almost surely, 2^{255355433871943} is an apocalyptic number.

255355433871943 is a deficient number, since it is larger than the sum of its proper divisors (1).

255355433871943 is an equidigital number, since it uses as much as digits as its factorization.

255355433871943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480000, while the sum is 67.

The spelling of 255355433871943 in words is "two hundred fifty-five trillion, three hundred fifty-five billion, four hundred thirty-three million, eight hundred seventy-one thousand, nine hundred forty-three".