21604734444322 has 16 divisors (see below), whose sum is σ = 32607010900800. Its totient is φ = 10735735252752.

The previous prime is 21604734444211. The next prime is 21604734444383. The reversal of 21604734444322 is 22344443740612.

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, 8767179 + ... + 10957777.

It is an arithmetic number, because the mean of its divisors is an integer number (2037938181300).

Almost surely, 2^{21604734444322} is an apocalyptic number.

21604734444322 is a deficient number, since it is larger than the sum of its proper divisors (11002276456478).

21604734444322 is a wasteful number, since it uses less digits than its factorization.

21604734444322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221017.

The product of its (nonzero) digits is 3096576, while the sum is 46.

It can be divided in two parts, 2160473 and 4444322, that added together give a triangular number (6604795 = T₃₆₃₄).

The spelling of 21604734444322 in words is "twenty-one trillion, six hundred four billion, seven hundred thirty-four million, four hundred forty-four thousand, three hundred twenty-two".