I would say that 1.4 PeV is enough energy (by a large margin) to be audible. If that photon interacted with something near you and deposited any respectable fra

I would say that 1.4 PeV is enough energy (by a large margin) to be audible. If that photon interacted with something near you and deposited any respectable fraction of its energy as heat or kinetic energy on a macroscopic scale, you would hear it!