Your quality settings are insanely high
- branched pathtracing
- full GI
- 10 000 AA samples
- 250 000 diffuse samples
and fuck knows what resolution you're rendering at.
Not even pixar renders at a tenth of those quality settings, I bet
There are also a tonne of tutorials on youtube etc how to speed up rendering with various tricks (clamping, light portals, ...) and you can render on GPU (or GPU + CPU simultaneously) which is 2x-10x faster.