According to TMZ:
Informed sources tell TMZ … Russell and Katy did NOT have a prenup. As a result, everything they earned during their 14-month marriage is community property — which means they’re each entitled to 50% of the pot.
Katy made $44 million between May, 2010 and May, 2011 — according to Forbes. The couple married in October, 2010, so Russell could have scored a fortune if he exercised his community property rights.
Russell Brand gets some points for not wanting a penny of Katy Perry’s money when their divorce is finalized in June. Interesting!