20204203055 has 4 divisors (see below), whose sum is σ = 24245043672. Its totient is φ = 16163362440.

The previous prime is 20204203031. The next prime is 20204203057. The reversal of 20204203055 is 55030240202.

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

It is not a de Polignac number, because 20204203055 - 2¹⁴ = 20204186671 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20204203055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20204203057) 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 3 ways as a sum of consecutive naturals, for example, 2020420301 + ... + 2020420310.

It is an arithmetic number, because the mean of its divisors is an integer number (6061260918).

Almost surely, 2^20204203055 is an apocalyptic number.

20204203055 is a deficient number, since it is larger than the sum of its proper divisors (4040840617).

20204203055 is an equidigital number, since it uses as much as digits as its factorization.

20204203055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040840616.

The product of its (nonzero) digits is 2400, while the sum is 23.

Adding to 20204203055 its reverse (55030240202), we get a palindrome (75234443257).

The spelling of 20204203055 in words is "twenty billion, two hundred four million, two hundred three thousand, fifty-five".