Declension table of ?bṛhatīsahasra

Neuter	Singular	Dual	Plural
Nominative	bṛhatīsahasram	bṛhatīsahasre	bṛhatīsahasrāṇi
Vocative	bṛhatīsahasra	bṛhatīsahasre	bṛhatīsahasrāṇi
Accusative	bṛhatīsahasram	bṛhatīsahasre	bṛhatīsahasrāṇi
Instrumental	bṛhatīsahasreṇa	bṛhatīsahasrābhyām	bṛhatīsahasraiḥ
Dative	bṛhatīsahasrāya	bṛhatīsahasrābhyām	bṛhatīsahasrebhyaḥ
Ablative	bṛhatīsahasrāt	bṛhatīsahasrābhyām	bṛhatīsahasrebhyaḥ
Genitive	bṛhatīsahasrasya	bṛhatīsahasrayoḥ	bṛhatīsahasrāṇām
Locative	bṛhatīsahasre	bṛhatīsahasrayoḥ	bṛhatīsahasreṣu

Compound bṛhatīsahasra -

Adverb -bṛhatīsahasram -bṛhatīsahasrāt