static batching

if i use static batching, what does it mean if i have, say, 17 draw calls and 20 batched? does it mean that i have just 1 draw call, since there are more batched than the number of original draw calls? i am a bit unclear about the relation between these 2 numbers.
also, when atlasing, is there some sort of sweet spot where dimensions would be so big, it would decrease instead of increasing performance? (assuming i am using static batching)
Thanks.
Oren.

It means you have 17 draw calls, as it says. It would not be possible to have more batched draw calls than there were originally. If you had 1 draw call and 20 batched, that means you had 20 originally and now have 1 because of batching. 17 and 20 means you had up to 36 originally.