It is unimaginably stronger than you think. It holds nuclei together against the powerful repulsive electromagnetic force that would otherwise cause the nucleus to explode. Consider ordinary helium 4 with 2 protons and 2 neutrons. How strong is the attractive force between any two nucleons (protons or neutrons)?

Here is the spectacular answer: About 1000 newtons. This is the weight (gravitational attractive force to the Earth at sea level) of a 100 kilogram mass. In other words, if you could somehow hook a 100 kilogram mass to a proton and raise the rest of the nucleus up into the air, then the 100 kilogram mass would be held up. Another way of looking at it is that the strong nuclear force between two nucleons is some 1,000,000,000,000,000,000,000,000 times stronger than their mutual gravitational attraction.

DFM

https://en.wikipedia.org/wiki/Nuclear_force