AC 4264 - Are there numbers in heaven?

AC 4264 [2]
I have sometimes wondered
that when the speech of the angels fell down
into the world of spirits,
it fell also into various numbers;
and also that where numbers were read in the Word,
real things were understood by the angels.
For number never penetrates into heaven,
because numbers are measures of both space and of time,
these being of the world and of nature,
to which in the heavens
correspond states and changes of states.
The most ancient people,
who were celestial people and had communication with angels,
knew what was signified by every number,
even by the compound ones;
and from them
their signification was handed down to their posterity,
and to the sons of the Ancient Church.
These are things which will hardly be credited
by the person of the church at this day,
who believes nothing to have been stored up in the Word
more holy than what appears in the letter.