Risa

It's hard for people living on a planet to comprehend how huge a planet is too, thus low-ball numbers for populations of ecumenopolises, just like for ships. The population given for Coruscant (1 trillion) on a planet the size of Earth would give over 500 m² per person, and that's not accounting for multiple layers. So not as crowded as it looks. The population would be limited by resources or heat dissipation more than by area.