What is the longest time Randy Orton has held the title for?

His reigns are as follows:

a. First reign as WWE champ - 0 days

b. Second reign as WWE champ - 203 days

c. Third reign as WWE champ - 42 days

d. Fourth reign as WWE champ - 90 days

e. Fifth reign as WWE champ - 21 days

f. Sixth reign as WWE champ - 64 days

Randy orton has been a WWE champ for a total of 420 days.