Declension table of ?saṅkhyatva

Neuter	Singular	Dual	Plural
Nominative	saṅkhyatvam	saṅkhyatve	saṅkhyatvāni
Vocative	saṅkhyatva	saṅkhyatve	saṅkhyatvāni
Accusative	saṅkhyatvam	saṅkhyatve	saṅkhyatvāni
Instrumental	saṅkhyatvena	saṅkhyatvābhyām	saṅkhyatvaiḥ
Dative	saṅkhyatvāya	saṅkhyatvābhyām	saṅkhyatvebhyaḥ
Ablative	saṅkhyatvāt	saṅkhyatvābhyām	saṅkhyatvebhyaḥ
Genitive	saṅkhyatvasya	saṅkhyatvayoḥ	saṅkhyatvānām
Locative	saṅkhyatve	saṅkhyatvayoḥ	saṅkhyatveṣu

Compound saṅkhyatva -

Adverb -saṅkhyatvam -saṅkhyatvāt