22440404433 has 4 divisors (see below), whose sum is σ = 29920539248. Its totient is φ = 14960269620.

The previous prime is 22440404387. The next prime is 22440404443. The reversal of 22440404433 is 33440404422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22440404433 - 2⁸ = 22440404177 is a prime.

It is a super-2 number, since 2×22440404433² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22440404433.

It is not an unprimeable number, because it can be changed into a prime (22440404443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3740067403 + ... + 3740067408.

It is an arithmetic number, because the mean of its divisors is an integer number (7480134812).

Almost surely, 2^22440404433 is an apocalyptic number.

It is an amenable number.

22440404433 is a deficient number, since it is larger than the sum of its proper divisors (7480134815).

22440404433 is an equidigital number, since it uses as much as digits as its factorization.

22440404433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7480134814.

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 22440404433 its reverse (33440404422), we get a palindrome (55880808855).

The spelling of 22440404433 in words is "twenty-two billion, four hundred forty million, four hundred four thousand, four hundred thirty-three".