Can you solve these 3 riddles?

[ThatDude30]

Can you solve these 3 riddles, without looking them on a search engine?
Do not post your answers, and spoil it for everyone.
PM message me your answers

Riddle 1.
The following number is the only one of its kind, 8,549,176,320
Can you figure out what is so special about it?

Riddle 2.
What are the next two letters in the following series and why?
W A T N T L I T F S _ _

Riddle 3.
Ten mens strength, ten mens length, ten men cant break it, yet a young boy walks off with it.
What is it?

 

[Damaged Eagle]

Yes

*****SMILE*****





BTW: That's a very large prime multiple in the first riddle. I might use that prime on my next combo lock.

 

[waltky]

Was that David Carradine who played the flute in Can't You See...

... like he did in the TV show Kung Fu?