  Measurements of anisotropic flow coefficients with two- and multi-particle
cumulants for inclusive charged particles in Pb-Pb collisions at
$\sqrt{{\textit s}_\text{NN}} = 5.02$ and 2.76 TeV are reported in the
pseudorapidity range $|\eta| < 0.8$ and transverse momentum $0.2 < p_\text{T} <
50$ GeV/$c$. The full data sample collected by the ALICE detector in 2015
(2010), corresponding to an integrated luminosity of 12.7 (2.0) $\mu$b$^{-1}$
in the centrality range 0-80%, is analysed. Flow coefficients up to the sixth
flow harmonic ($v_6$) are reported and a detailed comparison among results at
the two energies is carried out. The $p_\text{T}$ dependence of anisotropic
flow coefficients and its evolution with respect to centrality and harmonic
number $n$ are investigated. An approximate power-law scaling of the form
$v_n(p_\text{T}) \sim p_\text{T}^{n/3}$ is observed for all flow harmonics at
low $p_\text{T}$ ($0.2 < p_\text{T} < 3$ GeV/$c$). At the same time, the ratios
$v_n/v_m^{n/m}$ are observed to be essentially independent of $p_\text{T}$ for
most centralities up to about $p_\text{T} = 10$ GeV/$c$. Analysing the
differences among higher-order cumulants of elliptic flow ($v_2$), which have
different sensitivities to flow fluctuations, a measurement of the standardised
skewness of the event-by-event $v_2$ distribution $P(v_2)$ is reported and
constraints on its higher moments are provided. The Elliptic Power distribution
is used to parametrise $P(v_2)$, extracting its parameters from fits to
cumulants. The measurements are compared to different model predictions in
order to discriminate among initial-state models and to constrain the
temperature dependence of the shear viscosity to entropy-density ratio.
