The Devil may have all the best tunes, but he doesn’t have a monopoly on numbers of the type described by The_Letter_Wriggler in
#91127 Q2: The devil does math. Can you find another number that matches the criterion laid out in Q2, other than the Devil’s number itself?
[I haven’t had time to check your calculations, but then I don’t need to.! With such a talented crew taking part, someone should be able to come up with an answer! Harry]