2066806813443 has 16 divisors (see below), whose sum is σ = 2919184145280. Its totient is φ = 1296224747136.

The previous prime is 2066806813417. The next prime is 2066806813481. The reversal of 2066806813443 is 3443186086602.

It is a happy number.

It is not a de Polignac number, because 2066806813443 - 2¹⁰ = 2066806812419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (2066806813483) 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, 9188005 + ... + 9410262.

It is an arithmetic number, because the mean of its divisors is an integer number (182449009080).

Almost surely, 2^{2066806813443} is an apocalyptic number.

2066806813443 is a deficient number, since it is larger than the sum of its proper divisors (852377331837).

2066806813443 is a wasteful number, since it uses less digits than its factorization.

2066806813443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18600466.

The product of its (nonzero) digits is 3981312, while the sum is 51.

The spelling of 2066806813443 in words is "two trillion, sixty-six billion, eight hundred six million, eight hundred thirteen thousand, four hundred forty-three".