This packages defines commands to display counters spelled out
in Portuguese. The styles are \numberpt for "all lowercase"
\Numberpt for "First word capitalized" \NumberPt for "All
Capitalized" \NUMBERPT for "ALL UPPERCASE" For example,
\renewcommand{\thechapter}{\NumberPt{chapter}} makes chapter
titles to be rendered as "Capitulo Um", "Capitulo Dois" etc.
Options are offered to select variations in the spelling of
"14", or Brazilian vs. European Portuguese forms in the
spelling of "16", "17", and "19". The package requires expl3
and xparse.

Homepage:
https://ctan.org/pkg/numberpt
