505050505489 has 2 divisors, whose sum is σ = 505050505490. Its totient is φ = 505050505488.

The previous prime is 505050505483. The next prime is 505050505543. The reversal of 505050505489 is 984505050505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 446090410000 + 58960095489 = 667900^2 + 242817^2 .

It is a cyclic number.

It is not a de Polignac number, because 505050505489 - 2¹⁵ = 505050472721 is a prime.

It is not a weakly prime, because it can be changed into another prime (505050505483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252525252744 + 252525252745.

It is an arithmetic number, because the mean of its divisors is an integer number (252525252745).

Almost surely, 2^505050505489 is an apocalyptic number.

It is an amenable number.

505050505489 is a deficient number, since it is larger than the sum of its proper divisors (1).

505050505489 is an equidigital number, since it uses as much as digits as its factorization.

505050505489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900000, while the sum is 46.

The spelling of 505050505489 in words is "five hundred five billion, fifty million, five hundred five thousand, four hundred eighty-nine".