Innumerable (SB cantos 10 - 12)
Srimad-Bhagavatam
SB Canto 10.1 to 10.13
"The Brahmās, the heads of the innumerable universes, live only for the duration of one breath of Mahā-viṣṇu. I worship Govinda, the original Lord, of whom Mahā-viṣṇu is but a portion of a plenary portion." (Bs. 5.48)
Govinda, Kṛṣṇa, is the original Personality of Godhead. Kṛṣṇas tu bhagavān svayam (SB 1.3.28). Even Lord Mahā-viṣṇu, who by His breathing creates many millions upon millions of universes, is Lord Kṛṣṇa's kalā-viśeṣa, or plenary portion of a plenary portion. Mahā-viṣṇu is a plenary expansion of Saṅkarṣaṇa, who is a plenary expansion of Nārāyaṇa. Nārāyaṇa is a plenary expansion of the catur-vyūha, and the catur-vyūha are plenary expansions of Baladeva, the first manifestation of Kṛṣṇa. Therefore when Kṛṣṇa appeared with Baladeva, all the viṣṇu-tattvas appeared with Him.