22166027840 has 112 divisors (see below), whose sum is σ = 57747651840. Its totient is φ = 8037089280.

The previous prime is 22166027827. The next prime is 22166027957. The reversal of 22166027840 is 4872066122.

It is a junction number, because it is equal to n+sod(n) for n = 22166027794 and 22166027803.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1233641 + ... + 1251479.

Almost surely, 2^22166027840 is an apocalyptic number.

22166027840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22166027840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28873825920).

22166027840 is an abundant number, since it is smaller than the sum of its proper divisors (35581624000).

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

22166027840 is a wasteful number, since it uses less digits than its factorization.

22166027840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18220 (or 18210 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 22166027840 in words is "twenty-two billion, one hundred sixty-six million, twenty-seven thousand, eight hundred forty".