3666995809033 has 2 divisors, whose sum is σ = 3666995809034. Its totient is φ = 3666995809032.

The previous prime is 3666995809021. The next prime is 3666995809097. The reversal of 3666995809033 is 3309085996663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2414393884224 + 1252601924809 = 1553832^2 + 1119197^2 .

It is a cyclic number.

It is not a de Polignac number, because 3666995809033 - 2⁹ = 3666995808521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3666995809033.

It is not a weakly prime, because it can be changed into another prime (3666995809003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833497904516 + 1833497904517.

It is an arithmetic number, because the mean of its divisors is an integer number (1833497904517).

Almost surely, 2^{3666995809033} is an apocalyptic number.

It is an amenable number.

3666995809033 is a deficient number, since it is larger than the sum of its proper divisors (1).

3666995809033 is an equidigital number, since it uses as much as digits as its factorization.

3666995809033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170061120, while the sum is 67.

The spelling of 3666995809033 in words is "three trillion, six hundred sixty-six billion, nine hundred ninety-five million, eight hundred nine thousand, thirty-three".