20434255203 has 4 divisors (see below), whose sum is σ = 27245673608. Its totient is φ = 13622836800.

The previous prime is 20434255199. The next prime is 20434255291. The reversal of 20434255203 is 30255243402.

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

It is not a de Polignac number, because 20434255203 - 2² = 20434255199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20434255003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3405709198 + ... + 3405709203.

It is an arithmetic number, because the mean of its divisors is an integer number (6811418402).

Almost surely, 2^20434255203 is an apocalyptic number.

20434255203 is a deficient number, since it is larger than the sum of its proper divisors (6811418405).

20434255203 is an equidigital number, since it uses as much as digits as its factorization.

20434255203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6811418404.

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 20434255203 its reverse (30255243402), we get a palindrome (50689498605).

The spelling of 20434255203 in words is "twenty billion, four hundred thirty-four million, two hundred fifty-five thousand, two hundred three".