20440202203 has 4 divisors (see below), whose sum is σ = 20500855960. Its totient is φ = 20379548448.

The previous prime is 20440202149. The next prime is 20440202207. The reversal of 20440202203 is 30220204402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20440202203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20440202207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30326373 + ... + 30327046.

It is an arithmetic number, because the mean of its divisors is an integer number (5125213990).

Almost surely, 2^20440202203 is an apocalyptic number.

20440202203 is a deficient number, since it is larger than the sum of its proper divisors (60653757).

20440202203 is an equidigital number, since it uses as much as digits as its factorization.

20440202203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60653756.

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 20440202203 its reverse (30220204402), we get a palindrome (50660406605).

The spelling of 20440202203 in words is "twenty billion, four hundred forty million, two hundred two thousand, two hundred three".