33868442549 has 2 divisors, whose sum is σ = 33868442550. Its totient is φ = 33868442548.

The previous prime is 33868442539. The next prime is 33868442633. The reversal of 33868442549 is 94524486833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33706389649 + 162052900 = 183593^2 + 12730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33868442549 is a prime.

It is a super-2 number, since 2×33868442549² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33868442494 and 33868442503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33868442539) 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, 16934221274 + 16934221275.

It is an arithmetic number, because the mean of its divisors is an integer number (16934221275).

Almost surely, 2^33868442549 is an apocalyptic number.

It is an amenable number.

33868442549 is a deficient number, since it is larger than the sum of its proper divisors (1).

33868442549 is an equidigital number, since it uses as much as digits as its factorization.

33868442549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19906560, while the sum is 56.

The spelling of 33868442549 in words is "thirty-three billion, eight hundred sixty-eight million, four hundred forty-two thousand, five hundred forty-nine".