22144866528 has 144 divisors (see below), whose sum is σ = 60364135440. Its totient is φ = 7107028992.

The previous prime is 22144866511. The next prime is 22144866547. The reversal of 22144866528 is 82566844122.

It is a super-2 number, since 2×22144866528² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12956938 + ... + 12958646.

It is an arithmetic number, because the mean of its divisors is an integer number (419195385).

Almost surely, 2^22144866528 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 22144866528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30182067720).

22144866528 is an abundant number, since it is smaller than the sum of its proper divisors (38219268912).

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

22144866528 is a wasteful number, since it uses less digits than its factorization.

22144866528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881 (or 1830 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 48.

The spelling of 22144866528 in words is "twenty-two billion, one hundred forty-four million, eight hundred sixty-six thousand, five hundred twenty-eight".