20000009203 has 4 divisors (see below), whose sum is σ = 20033398800. Its totient is φ = 19966619608.

The previous prime is 20000009189. The next prime is 20000009221. The reversal of 20000009203 is 30290000002.

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

It is a cyclic number.

It is not a de Polignac number, because 20000009203 - 2⁵ = 20000009171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000009243) 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, 16693900 + ... + 16695097.

It is an arithmetic number, because the mean of its divisors is an integer number (5008349700).

Almost surely, 2^20000009203 is an apocalyptic number.

20000009203 is a deficient number, since it is larger than the sum of its proper divisors (33389597).

20000009203 is an equidigital number, since it uses as much as digits as its factorization.

20000009203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33389596.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20000009203 its reverse (30290000002), we get a palindrome (50290009205).

The spelling of 20000009203 in words is "twenty billion, nine thousand, two hundred three".