Depends on the engine. If you take a motor, like my Harley motor, with a 3.5" bore and 4.25" stroke and run it at 4000rpm all day, it will most definitely break! Now on the other hand, my Magna has a 70mm (~2.75") bore and 48.6mm (1.91") stroke, that thing can rev to 7,000rpm all day. Of course that's just considering the bottom end, you also have to have a valve train that can handle that type of stress.

Now, like everybody else said, if this is a stock car, of course it's going to last. You think Toyota would make an engine rev high if it wasn't able to handle it for an extended amount of mileage? Just keep the thing oiled at the specified service interval and you'll be fine.