Multiple choice whats a petabyte 1,000,000,000,000,000 1,000,000,000,000,000,000,000 1,000 1,000,000,000,000,000,000 Reveal answer Fill a bubble to check yourself A Correct answer Explanation A petabyte is a unit of digital information storage equal to 10 to the 15th power bytes, which is written as 1 followed by 15 zeros. This is equivalent to 1,000 terabytes or 1 million gigabytes.