33543212081 has 2 divisors, whose sum is σ = 33543212082. Its totient is φ = 33543212080.

The previous prime is 33543212071. The next prime is 33543212089. The reversal of 33543212081 is 18021234533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27087893056 + 6455319025 = 164584^2 + 80345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33543212081 is a prime.

It is a super-2 number, since 2×33543212081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33543212089) 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, 16771606040 + 16771606041.

It is an arithmetic number, because the mean of its divisors is an integer number (16771606041).

Almost surely, 2^33543212081 is an apocalyptic number.

It is an amenable number.

33543212081 is a deficient number, since it is larger than the sum of its proper divisors (1).

33543212081 is an equidigital number, since it uses as much as digits as its factorization.

33543212081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 33543212081 in words is "thirty-three billion, five hundred forty-three million, two hundred twelve thousand, eighty-one".