22026544321644 has 144 divisors (see below), whose sum is σ = 57410632397664. Its totient is φ = 7118334720000.

The previous prime is 22026544321637. The next prime is 22026544321667. The reversal of 22026544321644 is 44612344562022.

22026544321644 is a `hidden beast` number, since 2 + 2 + 0 + 2 + 6 + 54 + 432 + 164 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 22026544321644.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33779094 + ... + 34424994.

It is an arithmetic number, because the mean of its divisors is an integer number (398684947206).

Almost surely, 2^{22026544321644} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22026544321644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28705316198832).

22026544321644 is an abundant number, since it is smaller than the sum of its proper divisors (35384088076020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22026544321644 is a wasteful number, since it uses less digits than its factorization.

22026544321644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646208 (or 646203 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 45.

Adding to 22026544321644 its reverse (44612344562022), we get a palindrome (66638888883666).

The spelling of 22026544321644 in words is "twenty-two trillion, twenty-six billion, five hundred forty-four million, three hundred twenty-one thousand, six hundred forty-four".