33155223109 has 2 divisors, whose sum is σ = 33155223110. Its totient is φ = 33155223108.

The previous prime is 33155223103. The next prime is 33155223161. The reversal of 33155223109 is 90132255133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32023102500 + 1132120609 = 178950^2 + 33647^2 .

It is a cyclic number.

It is not a de Polignac number, because 33155223109 - 2¹⁷ = 33155092037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33155223103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16577611554 + 16577611555.

It is an arithmetic number, because the mean of its divisors is an integer number (16577611555).

Almost surely, 2^33155223109 is an apocalyptic number.

It is an amenable number.

33155223109 is a deficient number, since it is larger than the sum of its proper divisors (1).

33155223109 is an equidigital number, since it uses as much as digits as its factorization.

33155223109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 34.

The spelling of 33155223109 in words is "thirty-three billion, one hundred fifty-five million, two hundred twenty-three thousand, one hundred nine".