2005566212209 has 8 divisors (see below), whose sum is σ = 2292179791808. Its totient is φ = 1718978662800.

The previous prime is 2005566212203. The next prime is 2005566212213. The reversal of 2005566212209 is 9022126655002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2005566212209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005566212203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6342162 + ... + 6650875.

It is an arithmetic number, because the mean of its divisors is an integer number (286522473976).

Almost surely, 2^{2005566212209} is an apocalyptic number.

It is an amenable number.

2005566212209 is a deficient number, since it is larger than the sum of its proper divisors (286613579599).

2005566212209 is a wasteful number, since it uses less digits than its factorization.

2005566212209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13015095.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 2005566212209 in words is "two trillion, five billion, five hundred sixty-six million, two hundred twelve thousand, two hundred nine".