If this bothers you, you probably won't be pleased to learn that the overwhelming majority of "real numbers" can't be written down or even computed (ok, in principle you can enumerate the digits of at least one such number, but "Becher and Figueira proved in 2002 that there is a computable absolutely normal number, however no digits of their number are known.") [1]

1: https://en.wikipedia.org/wiki/Normal_number