33545221349 has 2 divisors, whose sum is σ = 33545221350. Its totient is φ = 33545221348.

The previous prime is 33545221313. The next prime is 33545221357. The reversal of 33545221349 is 94312254533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28759072225 + 4786149124 = 169585^2 + 69182^2 .

It is a cyclic number.

It is not a de Polignac number, because 33545221349 - 2⁸ = 33545221093 is a prime.

It is a super-2 number, since 2×33545221349² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33545221399) 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, 16772610674 + 16772610675.

It is an arithmetic number, because the mean of its divisors is an integer number (16772610675).

Almost surely, 2^33545221349 is an apocalyptic number.

It is an amenable number.

33545221349 is a deficient number, since it is larger than the sum of its proper divisors (1).

33545221349 is an equidigital number, since it uses as much as digits as its factorization.

33545221349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 41.

The spelling of 33545221349 in words is "thirty-three billion, five hundred forty-five million, two hundred twenty-one thousand, three hundred forty-nine".