200000561689 has 2 divisors, whose sum is σ = 200000561690. Its totient is φ = 200000561688.

The previous prime is 200000561687. The next prime is 200000561741. The reversal of 200000561689 is 986165000002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116190311689 + 83810250000 = 340867^2 + 289500^2 .

It is a cyclic number.

It is not a de Polignac number, because 200000561689 - 2¹ = 200000561687 is a prime.

Together with 200000561687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (200000561687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100000280844 + 100000280845.

It is an arithmetic number, because the mean of its divisors is an integer number (100000280845).

Almost surely, 2^200000561689 is an apocalyptic number.

It is an amenable number.

200000561689 is a deficient number, since it is larger than the sum of its proper divisors (1).

200000561689 is an equidigital number, since it uses as much as digits as its factorization.

200000561689 is an evil number, because the sum of its binary digits is even.

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

The spelling of 200000561689 in words is "two hundred billion, five hundred sixty-one thousand, six hundred eighty-nine".