20032000209 has 12 divisors (see below), whose sum is σ = 31160889396. Its totient is φ = 12327384672.

The previous prime is 20032000189. The next prime is 20032000223. The reversal of 20032000209 is 90200023002.

It can be written as a sum of positive squares in 2 ways, for example, as 1628364609 + 18403635600 = 40353^2 + 135660^2 .

It is not a de Polignac number, because 20032000209 - 2¹³ = 20031992017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20032000191 and 20032000200.

It is not an unprimeable number, because it can be changed into a prime (20032002209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85606722 + ... + 85606955.

It is an arithmetic number, because the mean of its divisors is an integer number (2596740783).

Almost surely, 2^20032000209 is an apocalyptic number.

It is an amenable number.

20032000209 is a deficient number, since it is larger than the sum of its proper divisors (11128889187).

20032000209 is a wasteful number, since it uses less digits than its factorization.

20032000209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171213696 (or 171213693 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The spelling of 20032000209 in words is "twenty billion, thirty-two million, two hundred nine", and thus it is an aban number.