22081365604 has 27 divisors (see below), whose sum is σ = 38945882521. Its totient is φ = 10954644560.

The previous prime is 22081365599. The next prime is 22081365611. The reversal of 22081365604 is 40656318022.

The square root of 22081365604 is 148598.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5212551204 + 16868814400 = 72198^2 + 129880^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 56764242 + ... + 56764630.

Almost surely, 2^22081365604 is an apocalyptic number.

22081365604 is the 148598-th square number.

It is an amenable number.

22081365604 is a deficient number, since it is larger than the sum of its proper divisors (16864516917).

22081365604 is an frugal number, since it uses more digits than its factorization.

22081365604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 22081365604 in words is "twenty-two billion, eighty-one million, three hundred sixty-five thousand, six hundred four".