Some random facts and figures:
27 : the number of times Alfred has been kidnapped
29 : the number of video games starring Batman
84 : the number of sound-effect cards (like ‘BAM!’) used in the TV series
356 : the number of “Holy”s uttered by Burt Ward’s Robin
350 : the number of dollars paid to Burt Ward (Robin) per week in Batman’s first season
1,075,000 : the number of dollars paid for a copy of Detective Comics #27, in 2010
6,000,000 : the number of dollars paid to Jack Nicholson for playing the Joker (salary)
50,000,000 : the number of dollars paid to Jack Nicholson for playing the Joker (back-end)
1,449,683,452 : the number of dollars earned by the Batman movie franchise, to date
31.3 billion : estimated annual earnings of Wayne Enterprises, according to Forbes