11043661656329 has 2 divisors, whose sum is σ = 11043661656330. Its totient is φ = 11043661656328.

The previous prime is 11043661656319. The next prime is 11043661656359. The reversal of 11043661656329 is 92365616634011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9050157689104 + 1993503967225 = 3008348^2 + 1411915^2 .

It is a cyclic number.

It is not a de Polignac number, because 11043661656329 - 2³² = 11039366689033 is a prime.

It is not a weakly prime, because it can be changed into another prime (11043661656319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5521830828164 + 5521830828165.

It is an arithmetic number, because the mean of its divisors is an integer number (5521830828165).

Almost surely, 2^{11043661656329} is an apocalyptic number.

It is an amenable number.

11043661656329 is a deficient number, since it is larger than the sum of its proper divisors (1).

11043661656329 is an equidigital number, since it uses as much as digits as its factorization.

11043661656329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 11043661656329 in words is "eleven trillion, forty-three billion, six hundred sixty-one million, six hundred fifty-six thousand, three hundred twenty-nine".