33989940653 has 2 divisors, whose sum is σ = 33989940654. Its totient is φ = 33989940652.

The previous prime is 33989940629. The next prime is 33989940671. The reversal of 33989940653 is 35604998933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19993394404 + 13996546249 = 141398^2 + 118307^2 .

It is a cyclic number.

It is not a de Polignac number, because 33989940653 - 2²² = 33985746349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33989940592 and 33989940601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33989940353) 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, 16994970326 + 16994970327.

It is an arithmetic number, because the mean of its divisors is an integer number (16994970327).

Almost surely, 2^33989940653 is an apocalyptic number.

It is an amenable number.

33989940653 is a deficient number, since it is larger than the sum of its proper divisors (1).

33989940653 is an equidigital number, since it uses as much as digits as its factorization.

33989940653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18895680, while the sum is 59.

The spelling of 33989940653 in words is "thirty-three billion, nine hundred eighty-nine million, nine hundred forty thousand, six hundred fifty-three".