33424312081 has 2 divisors, whose sum is σ = 33424312082. Its totient is φ = 33424312080.

The previous prime is 33424312079. The next prime is 33424312109. The reversal of 33424312081 is 18021342433.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25030087681 + 8394224400 = 158209^2 + 91620^2 .

It is a cyclic number.

It is not a de Polignac number, because 33424312081 - 2¹ = 33424312079 is a prime.

It is a super-2 number, since 2×33424312081² (a number of 22 digits) contains 22 as substring.

Together with 33424312079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (33424312021) 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, 16712156040 + 16712156041.

It is an arithmetic number, because the mean of its divisors is an integer number (16712156041).

Almost surely, 2^33424312081 is an apocalyptic number.

It is an amenable number.

33424312081 is a deficient number, since it is larger than the sum of its proper divisors (1).

33424312081 is an equidigital number, since it uses as much as digits as its factorization.

33424312081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 33424312081 in words is "thirty-three billion, four hundred twenty-four million, three hundred twelve thousand, eighty-one".