22044403551 has 4 divisors (see below), whose sum is σ = 29392538072. Its totient is φ = 14696269032.

The previous prime is 22044403543. The next prime is 22044403553. The reversal of 22044403551 is 15530444022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22044403551 - 2³ = 22044403543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22044403553) 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, 3674067256 + ... + 3674067261.

It is an arithmetic number, because the mean of its divisors is an integer number (7348134518).

Almost surely, 2^22044403551 is an apocalyptic number.

22044403551 is a deficient number, since it is larger than the sum of its proper divisors (7348134521).

22044403551 is an equidigital number, since it uses as much as digits as its factorization.

22044403551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7348134520.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 22044403551 its reverse (15530444022), we get a palindrome (37574847573).

The spelling of 22044403551 in words is "twenty-two billion, forty-four million, four hundred three thousand, five hundred fifty-one".