33124542181 has 2 divisors, whose sum is σ = 33124542182. Its totient is φ = 33124542180.

The previous prime is 33124542167. The next prime is 33124542223. The reversal of 33124542181 is 18124542133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28786212225 + 4338329956 = 169665^2 + 65866^2 .

It is a cyclic number.

It is not a de Polignac number, because 33124542181 - 2⁵ = 33124542149 is a prime.

It is a super-2 number, since 2×33124542181² (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 (33124542131) 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, 16562271090 + 16562271091.

It is an arithmetic number, because the mean of its divisors is an integer number (16562271091).

Almost surely, 2^33124542181 is an apocalyptic number.

It is an amenable number.

33124542181 is a deficient number, since it is larger than the sum of its proper divisors (1).

33124542181 is an equidigital number, since it uses as much as digits as its factorization.

33124542181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 34.

The spelling of 33124542181 in words is "thirty-three billion, one hundred twenty-four million, five hundred forty-two thousand, one hundred eighty-one".