How big is the universe in meters?

The diameter of the universe is approximately $871 \times {10}^{24}$ meters.
Which is $871$ yottameters or $871$ septillion.
I actually calculated it about $870898760$ exameters.
And it is still expanding at a rate of $74.3 \pm 2.1$ kilometers per second per megaparsec ( according to the data I've known earlier) and it's still accelerating.