2066641999 has 2 divisors, whose sum is σ = 2066642000. Its totient is φ = 2066641998.

The previous prime is 2066641991. The next prime is 2066642041. The reversal of 2066641999 is 9991466602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2066641999 - 2³ = 2066641991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2066641991) 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 as a sum of consecutive naturals, namely, 1033320999 + 1033321000.

It is an arithmetic number, because the mean of its divisors is an integer number (1033321000).

Almost surely, 2^2066641999 is an apocalyptic number.

2066641999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066641999 is an equidigital number, since it uses as much as digits as its factorization.

2066641999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 52.

The square root of 2066641999 is about 45460.3343476486. The cubic root of 2066641999 is about 1273.7623769528.

The spelling of 2066641999 in words is "two billion, sixty-six million, six hundred forty-one thousand, nine hundred ninety-nine".