2066143109 has 2 divisors, whose sum is σ = 2066143110. Its totient is φ = 2066143108.

The previous prime is 2066143091. The next prime is 2066143129. The reversal of 2066143109 is 9013416602.

Together with previous prime (2066143091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1712138884 + 354004225 = 41378^2 + 18815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2066143109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2066143129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033071554 + 1033071555.

It is an arithmetic number, because the mean of its divisors is an integer number (1033071555).

Almost surely, 2^2066143109 is an apocalyptic number.

It is an amenable number.

2066143109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066143109 is an equidigital number, since it uses as much as digits as its factorization.

2066143109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 2066143109 is about 45454.8469252730. The cubic root of 2066143109 is about 1273.6598727530.

The spelling of 2066143109 in words is "two billion, sixty-six million, one hundred forty-three thousand, one hundred nine".