22444557789 has 16 divisors (see below), whose sum is σ = 30142480320. Its totient is φ = 14855111040.

The previous prime is 22444557781. The next prime is 22444557791. The reversal of 22444557789 is 98775544422.

It is not a de Polignac number, because 22444557789 - 2³ = 22444557781 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444557781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297459 + ... + 365199.

It is an arithmetic number, because the mean of its divisors is an integer number (1883905020).

Almost surely, 2^22444557789 is an apocalyptic number.

It is an amenable number.

22444557789 is a deficient number, since it is larger than the sum of its proper divisors (7697922531).

22444557789 is a wasteful number, since it uses less digits than its factorization.

22444557789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68540.

The product of its digits is 22579200, while the sum is 57.

The spelling of 22444557789 in words is "twenty-two billion, four hundred forty-four million, five hundred fifty-seven thousand, seven hundred eighty-nine".