The mass difference between the and baryons is measured using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of , and is found to be m(Ωb-)-m(Ξb-)=248.54±0.51(stat)±0.38(syst)  MeV/c2. The mass of the baryon is measured to be m(Ωb-)=6045.9±0.5(stat)±0.6(syst)  MeV/c2. This is the most precise determination of the mass to date. In addition, the production rate of baryons relative to that of baryons is measured for the first time in collisions, using an LHCb dataset collected at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of . Reconstructing beauty baryons in the kinematic region and with their decays to a meson and a hyperon, the ratio fΩb-fΞb-×B(Ωb-→J/ψΩ-)B(Ξb-→J/ψΞ-)=0.120±0.008(stat)±0.008(syst), is obtained, where and are the fragmentation fractions of quarks into and baryons, respectively, and represents the branching fractions of their respective decays.