They are not telling about Total coins or premined coins.
This is the info you are looking for:
Technical Specifications
Scrypt proof-of-work algorithm
60 second block time target
~21 billion total coins
8000 coins per block, reduces by 0.5% each week starting 2/28/14
Difficulty retarget every 1 block
I found it here:
https://github.com/virtacoin/VirtaCoinProjectOooh, Time for me to 51% attack Virtacoin and doublespend with my scrypt ASIC. After I doublespend and drive the coin's price into the ground, I'm gonna fork it.
GOODLUCK GUYS.