21652602245306 has 16 divisors (see below), whose sum is σ = 34953188198760. Its totient is φ = 10022419553280.

The previous prime is 21652602245299. The next prime is 21652602245311. The reversal of 21652602245306 is 60354220625612.

It can be written as a sum of positive squares in 4 ways, for example, as 13428377025625 + 8224225219681 = 3664475^2 + 2867791^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5220008111 + ... + 5220012258.

Almost surely, 2^{21652602245306} is an apocalyptic number.

21652602245306 is a deficient number, since it is larger than the sum of its proper divisors (13300585953454).

21652602245306 is a wasteful number, since it uses less digits than its factorization.

21652602245306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10440020449.

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 21652602245306 in words is "twenty-one trillion, six hundred fifty-two billion, six hundred two million, two hundred forty-five thousand, three hundred six".