33040443389 has 2 divisors, whose sum is σ = 33040443390. Its totient is φ = 33040443388.

The previous prime is 33040443367. The next prime is 33040443407. The reversal of 33040443389 is 98334404033.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20416123225 + 12624320164 = 142885^2 + 112358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33040443389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33040343389) 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, 16520221694 + 16520221695.

It is an arithmetic number, because the mean of its divisors is an integer number (16520221695).

Almost surely, 2^33040443389 is an apocalyptic number.

It is an amenable number.

33040443389 is a deficient number, since it is larger than the sum of its proper divisors (1).

33040443389 is an equidigital number, since it uses as much as digits as its factorization.

33040443389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 41.

The spelling of 33040443389 in words is "thirty-three billion, forty million, four hundred forty-three thousand, three hundred eighty-nine".