Sept. 13 5:52 AM PT -- The "Hand in Hand" telethon reportedly raised over $44 million in relief funds for the victims of Hurricanes Harvey and Irma in one night of fundraising.

The telethon to benefit victims of Hurricanes Irma and Harvey just wrapped with fundraising efforts totaling over $14 million and counting in just an hour.

As we reported ... celebs like Al Pacino, Justin Timberlake, Jon Stewart, Chris Paul, Demi Lovato, Diddy, Leo DiCaprio, Justin Bieber, Sofia Vergara, Reese Witherspoon, Drake and many more pitched in for the one-hour long show.

Several of them answered phones to take donations, and others performed as the telethon -- the brain child of Scooter Braun and Bun B -- went live from L.A., NYC, Nashville and San Antonio. And with Michael Dell and Verizon footing the bill for production ... 100% of proceeds will benefit hurricane victims.

Obviously, a great cause ... and a great event too.