33331165849649 has 2 divisors, whose sum is σ = 33331165849650. Its totient is φ = 33331165849648.

The previous prime is 33331165849613. The next prime is 33331165849661. The reversal of 33331165849649 is 94694856113333.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21130340400625 + 12200825449024 = 4596775^2 + 3492968^2 .

It is a cyclic number.

It is not a de Polignac number, because 33331165849649 - 2⁴⁰ = 32231654221873 is a prime.

It is a super-2 number, since 2×33331165849649² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33331165849699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16665582924824 + 16665582924825.

It is an arithmetic number, because the mean of its divisors is an integer number (16665582924825).

Almost surely, 2^{33331165849649} is an apocalyptic number.

It is an amenable number.

33331165849649 is a deficient number, since it is larger than the sum of its proper divisors (1).

33331165849649 is an equidigital number, since it uses as much as digits as its factorization.

33331165849649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151165440, while the sum is 65.

The spelling of 33331165849649 in words is "thirty-three trillion, three hundred thirty-one billion, one hundred sixty-five million, eight hundred forty-nine thousand, six hundred forty-nine".