If you slept during the day, you can say birchas haTorah. Otherwise, you are not allowed to say it and you should have someone else be motzi you.
If you don’t have someone to be motzi you, you can’t say it if you are a girl, and you need to be yotzei from Ahava Rabba.
I’m not sure if a boy is allowed to say it if he really has no one to be yotzei him, but for boys it shouldn’t be such a problem to find someone.