20204445205 has 8 divisors (see below), whose sum is σ = 27708953472. Its totient is φ = 13854476688.

The previous prime is 20204445199. The next prime is 20204445229. The reversal of 20204445205 is 50254440202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20204445205 - 2²¹ = 20202348053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 288634897 + ... + 288634966.

It is an arithmetic number, because the mean of its divisors is an integer number (3463619184).

Almost surely, 2^20204445205 is an apocalyptic number.

It is an amenable number.

20204445205 is a deficient number, since it is larger than the sum of its proper divisors (7504508267).

20204445205 is an equidigital number, since it uses as much as digits as its factorization.

20204445205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577269875.

The product of its (nonzero) digits is 12800, while the sum is 28.

Adding to 20204445205 its reverse (50254440202), we get a palindrome (70458885407).

The spelling of 20204445205 in words is "twenty billion, two hundred four million, four hundred forty-five thousand, two hundred five".