A polymath is a person who knows a lot about a lot of subjects. If your friend is not only a brilliant physics student but has also published a poetry collection and won prizes at political debates, you can describe her as a polymath.

I define a modern polymath is someone who becomes competent in at least three diverse domains and integrates them into a top 1-percent skill set.

https://observer.com/2018/05/people-with-too-many-interests-more-likely-successful-polymath-entrepreneurship-antifragile/