Thats the wrong question to ask. Once your wallet or your BTC get "hacked" its already too late.
The question you should ask yourself (or us) is how you can avoid your wallet getting hacked (Wallets can be "hacked", BTC itself not). The key to this is to use the right wallet.
First, if you have lot of btc's you should spend <100$ for a hardware wallet. With such a HW wallet your coins will stay safe, even if your PC is infected with malware.
A HW wallet is pretty handy in everydays usage. If you only want to keep your coins without spending them in the next few years and are too greedy for a <100$ HW wallet,
you could use a paper wallet. A paper wallet is basically just a private-/public keypair generated and printed completely offline in several copies, saved in different places.
Once you want to spend your coins you can easily just import the private key into a wallet of your choice (Your PC will have to be free of malware for this not leading to a loss of your funds).