Re: How many bitcoins are there?

Currently or total? There will be a total amount of 21 million eventually. You can see the current amount here https://blockchain.info/charts/total-bitcoins

The total of 13 mill has been minned till the date,is that it?It means more than 35-40% are still to be mined ?

Yes. But it is going to be mined at a slower and slower rate.