22261040440 has 32 divisors (see below), whose sum is σ = 50091662880. Its totient is φ = 8903647872.

The previous prime is 22261040419. The next prime is 22261040447. The reversal of 22261040440 is 4404016222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22261040447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767482 + ... + 795958.

It is an arithmetic number, because the mean of its divisors is an integer number (1565364465).

Almost surely, 2^22261040440 is an apocalyptic number.

22261040440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22261040440 is an abundant number, since it is smaller than the sum of its proper divisors (27830622440).

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

22261040440 is a wasteful number, since it uses less digits than its factorization.

22261040440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48031 (or 48027 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 22261040440 its reverse (4404016222), we get a palindrome (26665056662).

The spelling of 22261040440 in words is "twenty-two billion, two hundred sixty-one million, forty thousand, four hundred forty".