WHEN you're legally entitled to half your ex-wife's $US44 million fortune, ($40.87 million) it's rare that a divorce would ever be amicable, but somehow Russell Brand is playing the nice guy.

Lawyers for the couple finalised the divorce papers on Tuesday, but Brand reportedly doesn't want a cent from Perry's fortune.

The couple, who married in October 2010, did not sign a pre-nup meaning everything they earned during their 14-month marriage is combined and halved.

According to Forbes magazine, the Firework singer earned a whopping $44 million between May 2010 and May 2011 and Brand is legally entitled to $20 million of it.

But The Get Him To The Greek actor has reportedly done the honourable thing by his higher-earning ex-wife and won't touch a dime.

"This divorce is as amicable as it gets, and Russell was a mensch (Yiddish for a good person)," a source told gossip website TMZ.

Reports of marital strife plagued the couple in the months prior to their December 2011 divorce, but Brand says he still holds a candle for his former wife.

“I’ll always adore her and I know we’ll remain friends,” he said in a statement.