The most common and most likely answer to this crossword clue is the 8 letter word MILLIONS
I've seen this crossword clue in Independent
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More clues leading to the result MILLIONS
Buddy explains!

The straight part
We know that "huge numbers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case huge numbers = millions.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MILLIONS mean?
MILLIONS noun- (long and short scales) The cardinal number 1,000,000: 106; a thousand thousand.
- An unspecified very large number.