2043083684861 has 2 divisors, whose sum is σ = 2043083684862. Its totient is φ = 2043083684860.

The previous prime is 2043083684849. The next prime is 2043083684891. The reversal of 2043083684861 is 1684863803402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1687450362361 + 355633322500 = 1299019^2 + 596350^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043083684861 - 2⁶ = 2043083684797 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 (2043083684891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021541842430 + 1021541842431.

It is an arithmetic number, because the mean of its divisors is an integer number (1021541842431).

Almost surely, 2^{2043083684861} is an apocalyptic number.

It is an amenable number.

2043083684861 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043083684861 is an equidigital number, since it uses as much as digits as its factorization.

2043083684861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5308416, while the sum is 53.

The spelling of 2043083684861 in words is "two trillion, forty-three billion, eighty-three million, six hundred eighty-four thousand, eight hundred sixty-one".