University of KashanIranian Journal of Mathematical Chemistry2228-64893220120901Computing Wiener and Hyper–Wiener Indices of Unitary Cayley Graphs121125523010.22052/ijmc.2012.5230ENA.LOGHMANPayame Noor Universtiy, IRANJournal Article20140429The unitary Cayley graph Xn has vertex set Zn = {0, 1,…, n-1} and vertices u and v are adjacent, if gcd(uv, n) = 1. In [A. Ilić, The energy of unitary Cayley graphs, Linear Algebra Appl. 431 (2009) 1881–1889], the energy of unitary Cayley graphs is computed. In this paper the Wiener and hyperWiener index of Xn is computed.https://ijmc.kashanu.ac.ir/article_5230_e9f9e2e5cb6d37900fb420cdfb2b8a61.pdf