10993884304721 has 2 divisors, whose sum is σ = 10993884304722. Its totient is φ = 10993884304720.

The previous prime is 10993884304703. The next prime is 10993884304763. The reversal of 10993884304721 is 12740348839901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6458002387600 + 4535881917121 = 2541260^2 + 2129761^2 .

It is an emirp because it is prime and its reverse (12740348839901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10993884304721 - 2¹⁰ = 10993884303697 is a prime.

It is not a weakly prime, because it can be changed into another prime (10993884304321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5496942152360 + 5496942152361.

It is an arithmetic number, because the mean of its divisors is an integer number (5496942152361).

Almost surely, 2^{10993884304721} is an apocalyptic number.

It is an amenable number.

10993884304721 is a deficient number, since it is larger than the sum of its proper divisors (1).

10993884304721 is an equidigital number, since it uses as much as digits as its factorization.

10993884304721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10450944, while the sum is 59.

The spelling of 10993884304721 in words is "ten trillion, nine hundred ninety-three billion, eight hundred eighty-four million, three hundred four thousand, seven hundred twenty-one".