How many siblings did Athena have?

She has no siblings of the same mother. However, she had a half-brother named Ares, the twin archers, Artemis and Apollo, Hephaestus, Dionysus, and she had several demigod sibs too, including Helena, Perseus, and Hercules.Oh and even though its not in greek mythology if you have played the God of War:ghost of Sparta game you would know that KRATOS (the guy who kills the original god of war ares and takes his place then kills the god of death thanatos and takes his place)is also Athena's brother