20900060204209 has 16 divisors (see below), whose sum is σ = 21150161210880. Its totient is φ = 20651143242240.

The previous prime is 20900060204207. The next prime is 20900060204213. The reversal of 20900060204209 is 90240206000902.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20900060204209 - 2¹ = 20900060204207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20900060204207) 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 15 ways as a sum of consecutive naturals, for example, 115655277 + ... + 115835845.

It is an arithmetic number, because the mean of its divisors is an integer number (1321885075680).

Almost surely, 2^{20900060204209} is an apocalyptic number.

It is an amenable number.

20900060204209 is a deficient number, since it is larger than the sum of its proper divisors (250101006671).

20900060204209 is a wasteful number, since it uses less digits than its factorization.

20900060204209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183840.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 20900060204209 in words is "twenty trillion, nine hundred billion, sixty million, two hundred four thousand, two hundred nine".