The longest word

If God had created the world with a single word, describing all there is to it, I wonder how long¹ was this word?

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¹ Actually, since the number of atoms in the observable universe is estimated to be at most 10⁸⁰  (if that would be all hydrogen), and let's say he would need about ten letters on average to name each (the longest is Rutherfordium with 13 letters), that would only be a 10⁸¹ character word^*.
Blimey, I hope there's an abbreviation for this one.

^* But then it could have also been an 11 letter word: "Singularity"ǂ

ǂ That is, if God had used English. But its more probably Hebrew or something.