550688668889 has 2 divisors, whose sum is σ = 550688668890. Its totient is φ = 550688668888.

The previous prime is 550688668801. The next prime is 550688668913. The reversal of 550688668889 is 988866886055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 537985575625 + 12703093264 = 733475^2 + 112708^2 .

It is a cyclic number.

It is not a de Polignac number, because 550688668889 - 2¹² = 550688664793 is a prime.

It is not a weakly prime, because it can be changed into another prime (550688638889) 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, 275344334444 + 275344334445.

It is an arithmetic number, because the mean of its divisors is an integer number (275344334445).

Almost surely, 2^550688668889 is an apocalyptic number.

It is an amenable number.

550688668889 is a deficient number, since it is larger than the sum of its proper divisors (1).

550688668889 is an equidigital number, since it uses as much as digits as its factorization.

550688668889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1592524800, while the sum is 77.

The spelling of 550688668889 in words is "five hundred fifty billion, six hundred eighty-eight million, six hundred sixty-eight thousand, eight hundred eighty-nine".