255045155440991 has 2 divisors, whose sum is σ = 255045155440992. Its totient is φ = 255045155440990.

The previous prime is 255045155440969. The next prime is 255045155441051. The reversal of 255045155440991 is 199044551540552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255045155440991 is a prime.

It is a super-2 number, since 2×255045155440991² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 255045155440991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255045155440931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127522577720495 + 127522577720496.

It is an arithmetic number, because the mean of its divisors is an integer number (127522577720496).

Almost surely, 2^{255045155440991} is an apocalyptic number.

255045155440991 is a deficient number, since it is larger than the sum of its proper divisors (1).

255045155440991 is an equidigital number, since it uses as much as digits as its factorization.

255045155440991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400000, while the sum is 59.

The spelling of 255045155440991 in words is "two hundred fifty-five trillion, forty-five billion, one hundred fifty-five million, four hundred forty thousand, nine hundred ninety-one".