33812421833 has 2 divisors, whose sum is σ = 33812421834. Its totient is φ = 33812421832.

The previous prime is 33812421827. The next prime is 33812421883.

It is a happy number.

33812421833 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33645831184 + 166590649 = 183428^2 + 12907^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 33812421833 - 2³² = 29517454537 is a prime.

It is a super-2 number, since 2×33812421833² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33812421883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16906210916 + 16906210917.

It is an arithmetic number, because the mean of its divisors is an integer number (16906210917).

Almost surely, 2^33812421833 is an apocalyptic number.

It is an amenable number.

33812421833 is a deficient number, since it is larger than the sum of its proper divisors (1).

33812421833 is an equidigital number, since it uses as much as digits as its factorization.

33812421833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 38.

The spelling of 33812421833 in words is "thirty-three billion, eight hundred twelve million, four hundred twenty-one thousand, eight hundred thirty-three".