20444633450 has 24 divisors (see below), whose sum is σ = 38097358860. Its totient is φ = 8162726400.

The previous prime is 20444633389. The next prime is 20444633459. The reversal of 20444633450 is 5433644402.

It can be written as a sum of positive squares in 6 ways, for example, as 7978241041 + 12466392409 = 89321^2 + 111653^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20444633450.

It is not an unprimeable number, because it can be changed into a prime (20444633459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 350855 + ... + 404954.

Almost surely, 2^20444633450 is an apocalyptic number.

20444633450 is a deficient number, since it is larger than the sum of its proper divisors (17652725410).

20444633450 is a wasteful number, since it uses less digits than its factorization.

20444633450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756362 (or 756357 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 35.

The spelling of 20444633450 in words is "twenty billion, four hundred forty-four million, six hundred thirty-three thousand, four hundred fifty".