33680231216449 has 2 divisors, whose sum is σ = 33680231216450. Its totient is φ = 33680231216448.

The previous prime is 33680231216441. The next prime is 33680231216453. The reversal of 33680231216449 is 94461213208633.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22323196416049 + 11357034800400 = 4724743^2 + 3370020^2 .

It is a cyclic number.

It is not a de Polignac number, because 33680231216449 - 2³ = 33680231216441 is a prime.

It is a super-2 number, since 2×33680231216449² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33680231216396 and 33680231216405.

It is not a weakly prime, because it can be changed into another prime (33680231216441) 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, 16840115608224 + 16840115608225.

It is an arithmetic number, because the mean of its divisors is an integer number (16840115608225).

Almost surely, 2^{33680231216449} is an apocalyptic number.

It is an amenable number.

33680231216449 is a deficient number, since it is larger than the sum of its proper divisors (1).

33680231216449 is an equidigital number, since it uses as much as digits as its factorization.

33680231216449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4478976, while the sum is 52.

The spelling of 33680231216449 in words is "thirty-three trillion, six hundred eighty billion, two hundred thirty-one million, two hundred sixteen thousand, four hundred forty-nine".