20594830009 has 4 divisors (see below), whose sum is σ = 22179047716. Its totient is φ = 19010612304.

The previous prime is 20594829953. The next prime is 20594830049. The reversal of 20594830009 is 90003849502.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1015824384 + 19579005625 = 31872^2 + 139925^2 .

It is a cyclic number.

It is not a de Polignac number, because 20594830009 - 2¹¹ = 20594827961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20594830049) 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, 792108834 + ... + 792108859.

It is an arithmetic number, because the mean of its divisors is an integer number (5544761929).

Almost surely, 2^20594830009 is an apocalyptic number.

It is an amenable number.

20594830009 is a deficient number, since it is larger than the sum of its proper divisors (1584217707).

20594830009 is a wasteful number, since it uses less digits than its factorization.

20594830009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584217706.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 20594830009 in words is "twenty billion, five hundred ninety-four million, eight hundred thirty thousand, nine".