200200001985 has 48 divisors (see below), whose sum is σ = 369549979344. Its totient is φ = 99911602176.

The previous prime is 200200001959. The next prime is 200200001987. The reversal of 200200001985 is 589100002002.

It can be written as a sum of positive squares in 8 ways, for example, as 30560633856 + 169639368129 = 174816^2 + 411873^2 .

It is not a de Polignac number, because 200200001985 - 2¹⁹ = 200199477697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200200001987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 624012 + ... + 888701.

It is an arithmetic number, because the mean of its divisors is an integer number (7698957903).

Almost surely, 2^200200001985 is an apocalyptic number.

It is an amenable number.

200200001985 is a deficient number, since it is larger than the sum of its proper divisors (169349977359).

200200001985 is a wasteful number, since it uses less digits than its factorization.

200200001985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512914 (or 1512911 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 200200001985 its reverse (589100002002), we get a palindrome (789300003987).

The spelling of 200200001985 in words is "two hundred billion, two hundred million, one thousand, nine hundred eighty-five".