Potential Kinetic Energy Of A Planet = Mass × Rotational / Orbital Velocity?

"In the equation, the increased relativistic mass (m) of a body times the speed of light squared (c2) is equal to the kinetic energy (E) of that body."
https://www.britannica.com/science/E-mc2-equation

"Earth has a mass of approximately 5,970,000,000,000,000,000,000,000 kilograms. That’s a really big number!"
https://spaceplace.nasa.gov/planets-weight/en/