Depends on the hybrid battery charge? Best case scenario a block or 2? But If the computer decides it wants the engine to start and it doesn’t codes will be thrown and your done.
Expect it to stop dead. The hybrid cell requires constant energizing. And if you don’t drive your hybrid for extended periods you run the risk of the NiMH going dead and that will require a tow to the dealership apparently (stated in the manual). But you have about 90 days of life in the hybrid cell w/o it being driven to recharge it.