What does "superperfect" mean?

Being or relating to a class of positive integers satisfying σ²(n)=σ(σ(n))=2n,, where σ is the divisor function. They are a generalization of perfect numbers.

Superperfect

adj

adj ·Rare ·Advanced level

Definitions

Adjective

1
Being or relating to a class of positive integers satisfying σ²(n)=σ(σ(n))=2n,, where σ is the divisor function. They are a generalization of perfect numbers. not-comparable

Etymology

From super- + perfect, coined by Suryanarayana in 1969.

Related phrases

perfect number

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.