(US, modern British and Australian, short scale, rare) 10⁵⁷.
1962, David Bergamini, The Universe, Time-Life Books, Google Books considers page number to be top-secret
The reason is that the rays created in the core are softened on their outward journey by being handled by the octodecillion-odd atoms of gas outside the core that are part of the sun but play no part in the central fusions.
2004, Jay Carty, Darrell Waltrip (co-author), Darrell Waltrip One-On-One, The Faith That Took Him to the Finish Line, Gospel Light Publishing, →ISBN, “Day 23”, unpaged
the odds on the development of a polypeptide, which is a protein building block, is 6 times 10 to the 57th power, or 600 octodecillion, to 1.
(dated British and Australian, long scale, rare) 10¹⁰⁸.