22644135452144 has 20 divisors (see below), whose sum is σ = 44188645625880. Its totient is φ = 11240614000320.

The previous prime is 22644135452083. The next prime is 22644135452189. The reversal of 22644135452144 is 44125453144622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5090855567 + ... + 5090860014.

It is an arithmetic number, because the mean of its divisors is an integer number (2209432281294).

Almost surely, 2^{22644135452144} is an apocalyptic number.

It is an amenable number.

22644135452144 is a deficient number, since it is larger than the sum of its proper divisors (21544510173736).

22644135452144 is a wasteful number, since it uses less digits than its factorization.

22644135452144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10181715728 (or 10181715722 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 47.

Adding to 22644135452144 its reverse (44125453144622), we get a palindrome (66769588596766).

The spelling of 22644135452144 in words is "twenty-two trillion, six hundred forty-four billion, one hundred thirty-five million, four hundred fifty-two thousand, one hundred forty-four".