33366703666981 has 2 divisors, whose sum is σ = 33366703666982. Its totient is φ = 33366703666980.

The previous prime is 33366703666969. The next prime is 33366703667023. The reversal of 33366703666981 is 18966630766333.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18354720946081 + 15011982720900 = 4284241^2 + 3874530^2 .

It is an emirp because it is prime and its reverse (18966630766333) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33366703666981 - 2⁹ = 33366703666469 is a prime.

It is a super-2 number, since 2×33366703666981² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33366703666781) 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, 16683351833490 + 16683351833491.

It is an arithmetic number, because the mean of its divisors is an integer number (16683351833491).

Almost surely, 2^{33366703666981} is an apocalyptic number.

It is an amenable number.

33366703666981 is a deficient number, since it is larger than the sum of its proper divisors (1).

33366703666981 is an equidigital number, since it uses as much as digits as its factorization.

33366703666981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317447424, while the sum is 67.

The spelling of 33366703666981 in words is "thirty-three trillion, three hundred sixty-six billion, seven hundred three million, six hundred sixty-six thousand, nine hundred eighty-one".