6

6 is a number in the Arabic Numeral System, the most widely used numeral system in the world. The first episode of Sesame Street to be sponsored by this number was Episode 0011. According to the song "Six", Bert's favorite number is 6. An animated number 6 appeared in the Number Song in the video special "What's the Name of That Song?" The street story in Episode 4172 centered around the "Number 6 Games".