Abstract. We show that the multiple divisor functions of integers in invertible residue classes modulo a prime number, as well as the Fourier coefficients of GLpN q Maass cusp forms for all N 2, satisfy a central limit theorem in a suitable range, generalizing the case N " 2 treated byÉ. Fouvry, S. Ganguly, E. Kowalski and P. Michel in [4]. Such universal Gaussian behaviour relies on a deep equidistribution result of products of hyper-Kloosterman sums.