I’d say it would all depend on how many you wanted and could physically take.
A newbie to the lifestyle could take 2 to 3 cocks, however an experienced one could take more.
All depends on your limits and what you wanted out of it.
X
According to numer theory it is 73:
"73, is the 21st prime number, its mirror 37 is the 12th and its mirror 21 is the product of multiplying, hang on to your hats, 7 and 3."
But my bet would be on 3.14 (a.k.a. pi -short for creampie)
Depends on your bent... one intense passionate lover pushing the erotic bounds of almost having an affair with her... or a big squad of guys letting her express her inner slut. Both sound great