Spanish
Spanish has unique names for every number up to dozen three, which is halfway between two multiples of ten. we’ll just use the ones up to 20.
0: cero
1: uno
2: dos
3: tres
4: cuatro
5: cinco
10: seis
11: siete
12: ocho
13: nueve
14: diez
15: once
20: doce
we can handle numbers from dozen one to dozen five the same way Spanish uses numbers from dozen four to thirsy two, using -i-.
21: dociuno
22: docidos
23: docitres
24: docicuatro
25: docicinco
most Spanish names for multiples of ten end with -enta. a good seximal equivalent would be something like -ensa, which replaces the t with an s the same way -sy is derived from -ty. the ones digit is separated from the sixes digit with “y”.
30: treinsa
31: treinsa y uno
32: treinsa y dos
33: treinsa y tres
34: treinsa y cuatro
35: treinsa y cinco
40: cuarensa
50: cincuensa
after that, we can simply loan the words for larger powers of nif.
100: nifo
101: nifo uno
110: nifo seis
120: nifo doce
130: nifo treinsa
131: nifo treinsa y uno
200: dos nifos
300: tres nifos
1000: seis nifos
1 0000: unexio
1 0000 0000: biexio