20200200000209 has 4 divisors (see below), whose sum is σ = 20746151351604. Its totient is φ = 19654248648816.

The previous prime is 20200200000193. The next prime is 20200200000217. The reversal of 20200200000209 is 90200000200202.

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 19385774973184 + 814425027025 = 4402928^2 + 902455^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200200000209 - 2⁴ = 20200200000193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20200200000259) 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, 272975675642 + ... + 272975675715.

It is an arithmetic number, because the mean of its divisors is an integer number (5186537837901).

Almost surely, 2^{20200200000209} is an apocalyptic number.

It is an amenable number.

20200200000209 is a deficient number, since it is larger than the sum of its proper divisors (545951351395).

20200200000209 is an equidigital number, since it uses as much as digits as its factorization.

20200200000209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545951351394.

The product of its (nonzero) digits is 144, while the sum is 17.

The spelling of 20200200000209 in words is "twenty trillion, two hundred billion, two hundred million, two hundred nine", and thus it is an aban number.