Kind of strange to include within a list of ten mathematical constants, five that are physical constants (Planck's constant, Avogadro's constant [which does have a unit], Speed of Light [itself based on two physical constants, μo and εo], Gravitational constant, and Boltzmann's constant.
Be honest: is there an underlying committment to the pseudo-philosophical notion of reification which animates your intention to conflate the physical (extra-mental substances whose regularity and order are described by numbers and relations) with mere beings of reason (concepts/ideas that exist not as substances but as reflections of extra-mental reality in a rational agent's mind)? Or, is it an out-and-out commitment to the nonsensesical claim that "everything in the universe IS mathematical"?