22055644040644 has 6 divisors (see below), whose sum is σ = 38597377071134. Its totient is φ = 11027822020320.

The previous prime is 22055644040641. The next prime is 22055644040663. The reversal of 22055644040644 is 44604044655022.

It can be written as a sum of positive squares in only one way, i.e., 19280881000000 + 2774763040644 = 4391000^2 + 1665762^2 .

It is a super-2 number, since 2×22055644040644² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22055644040594 and 22055644040603.

It is not an unprimeable number, because it can be changed into a prime (22055644040641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2756955505077 + ... + 2756955505084.

Almost surely, 2^{22055644040644} is an apocalyptic number.

It is an amenable number.

22055644040644 is a deficient number, since it is larger than the sum of its proper divisors (16541733030490).

22055644040644 is a wasteful number, since it uses less digits than its factorization.

22055644040644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513911010165 (or 5513911010163 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 46.

Adding to 22055644040644 its reverse (44604044655022), we get a palindrome (66659688695666).

The spelling of 22055644040644 in words is "twenty-two trillion, fifty-five billion, six hundred forty-four million, forty thousand, six hundred forty-four".