20442772444 has 6 divisors (see below), whose sum is σ = 35774851784. Its totient is φ = 10221386220.

The previous prime is 20442772433. The next prime is 20442772447. The reversal of 20442772444 is 44427724402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20442772397 and 20442772406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442772447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555346552 + ... + 2555346559.

Almost surely, 2^20442772444 is an apocalyptic number.

It is an amenable number.

20442772444 is a deficient number, since it is larger than the sum of its proper divisors (15332079340).

20442772444 is a wasteful number, since it uses less digits than its factorization.

20442772444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110693115 (or 5110693113 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 40.

The spelling of 20442772444 in words is "twenty billion, four hundred forty-two million, seven hundred seventy-two thousand, four hundred forty-four".