Came across the old book while cleaning out the attic, "Devils and Demons A dictionary of demonology-the total guide to the satanic realm" by J. Tondriau and R.Villeneuve. Can't find the copyright date, anyway, came across the heading of DEMONS, NUMBER OF: ....Alphonse de Spina, no date cited as to date of statement, estimated that the original orders of angels, 133,306,668 became demons. Jean Wier cited that 66 infernal princes were recognized, who command 6.666...
NUMBER OF DEMONS
NUMBER OF DEMONS