20204304009 has 16 divisors (see below), whose sum is σ = 27228399744. Its totient is φ = 13325644800.

The previous prime is 20204303993. The next prime is 20204304011. The reversal of 20204304009 is 90040340202.

It is a happy number.

It is not a de Polignac number, because 20204304009 - 2⁴ = 20204303993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20204304009.

It is not an unprimeable number, because it can be changed into a prime (20204304049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8404 + ... + 201194.

It is an arithmetic number, because the mean of its divisors is an integer number (1701774984).

Almost surely, 2^20204304009 is an apocalyptic number.

It is an amenable number.

20204304009 is a deficient number, since it is larger than the sum of its proper divisors (7024095735).

20204304009 is a wasteful number, since it uses less digits than its factorization.

20204304009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193168.

The product of its (nonzero) digits is 1728, while the sum is 24.

The spelling of 20204304009 in words is "twenty billion, two hundred four million, three hundred four thousand, nine".