60 and preceding 62. Its ordinal form is written "sixty-first" or 61st.61 (sixty-one) is a positive integer following
In googology Edit
In Greek-based number-naming systems, 61 is associated with prefix "henhexaconta-", and with prefix "unsexaginti-" in Latin systems.
It is one of the values of the weak Goodstein function: \(g(5)=61\).