22033533440 has 80 divisors (see below), whose sum is σ = 53179632000. Its totient is φ = 8754892800.

The previous prime is 22033533439. The next prime is 22033533443. The reversal of 22033533440 is 4433533022.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (22033533443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358061 + ... + 415059.

It is an arithmetic number, because the mean of its divisors is an integer number (664745400).

Almost surely, 2^22033533440 is an apocalyptic number.

22033533440 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 22033533440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26589816000).

22033533440 is an abundant number, since it is smaller than the sum of its proper divisors (31146098560).

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

22033533440 is an equidigital number, since it uses as much as digits as its factorization.

22033533440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57173 (or 57157 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 29.

The spelling of 22033533440 in words is "twenty-two billion, thirty-three million, five hundred thirty-three thousand, four hundred forty".