2000020209985 has 16 divisors (see below), whose sum is σ = 2744327814912. Its totient is φ = 1370720952000.

The previous prime is 2000020209949. The next prime is 2000020209989. The reversal of 2000020209985 is 5899020200002.

It is a happy number.

It is not a de Polignac number, because 2000020209985 - 2³⁷ = 1862581256513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000020209989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14963301 + ... + 15096370.

It is an arithmetic number, because the mean of its divisors is an integer number (171520488432).

Almost surely, 2^{2000020209985} is an apocalyptic number.

It is an amenable number.

2000020209985 is a deficient number, since it is larger than the sum of its proper divisors (744307604927).

2000020209985 is a wasteful number, since it uses less digits than its factorization.

2000020209985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30061584.

The product of its (nonzero) digits is 25920, while the sum is 37.

Adding to 2000020209985 its reverse (5899020200002), we get a palindrome (7899040409987).

The spelling of 2000020209985 in words is "two trillion, twenty million, two hundred nine thousand, nine hundred eighty-five".