Federal prosecutors have heard a lot of requests for leniency in mob cases, but they say one lifelong 87-year-old mob leader went too far by citing “civic deeds.”

Ciro Perrone is scheduled to be sentenced this week after his June conviction for his deeds in the Genovese organized-crime family.

Though federal guidelines call for a sentence of more than six and a half years in prison, Perrone wants no more than a year and a day in prison, citing his “civic deeds” and the facts that he walks with a limp, takes heart medications, and cares for his ailing wife. In convicting him, a jury focused on his Genovese family duties, finding he engaged, among other things, in an illegal gambling business and a loansharking conspiracy.

In court papers, lawyers for Perrone argued he “possesses a strong sense of community awareness and a history of civic deeds.”

The lawyers noted that he once notified all the residents of a building that an explosion in its incinerator room was filling the floors with smoke and that he had given handfuls of candy to boys when they finished school, and been generous at his parish.

Prosecutors strongly objected, describing Perrone as one of the Genovese family’s longest-standing and best-known leaders, a made member for decades who became a captain in the 1990s and directed his own crew afterward. “His claim to be some sort of civic hero reads as nothing short of a bad joke,” prosecutors wrote in court papers filed yesterday. “Perrone — despite the various exaggerated, self-serving anecdotes that accompany his sentencing memo — is a lifelong criminal and nothing more. The fact that Perrone has occasionally shared some of his criminal proceeds with his friends makes him no more of a civic hero and no less of a criminal.”

They said he has contributed nothing to society.