22205513601664 has 16 divisors (see below), whose sum is σ = 44237546628570. Its totient is φ = 11102756800768.

The previous prime is 22205513601647. The next prime is 22205513601707. The reversal of 22205513601664 is 46610631550222.

It can be written as a sum of positive squares in only one way, i.e., 22191561267264 + 13952334400 = 4710792^2 + 118120^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 22205513601664.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86740287379 + ... + 86740287634.

Almost surely, 2^{22205513601664} is an apocalyptic number.

It is an amenable number.

22205513601664 is a deficient number, since it is larger than the sum of its proper divisors (22032033026906).

22205513601664 is an equidigital number, since it uses as much as digits as its factorization.

22205513601664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173480575027 (or 173480575015 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 22205513601664 in words is "twenty-two trillion, two hundred five billion, five hundred thirteen million, six hundred one thousand, six hundred sixty-four".