20443444203 has 48 divisors (see below), whose sum is σ = 35070312480. Its totient is φ = 10491876864.

The previous prime is 20443444103. The next prime is 20443444261. The reversal of 20443444203 is 30244434402.

It is not a de Polignac number, because 20443444203 - 2¹² = 20443440107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20443444283) 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 47 ways as a sum of consecutive naturals, for example, 73858 + ... + 215271.

It is an arithmetic number, because the mean of its divisors is an integer number (730631510).

Almost surely, 2^20443444203 is an apocalyptic number.

20443444203 is a deficient number, since it is larger than the sum of its proper divisors (14626868277).

20443444203 is a wasteful number, since it uses less digits than its factorization.

20443444203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289196 (or 289189 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 20443444203 its reverse (30244434402), we get a palindrome (50687878605).

The spelling of 20443444203 in words is "twenty billion, four hundred forty-three million, four hundred forty-four thousand, two hundred three".