13445252216993 has 2 divisors, whose sum is σ = 13445252216994. Its totient is φ = 13445252216992.

The previous prime is 13445252216971. The next prime is 13445252217077. The reversal of 13445252216993 is 39961225254431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13155187032064 + 290065184929 = 3627008^2 + 538577^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13445252216993 is a prime.

It is not a weakly prime, because it can be changed into another prime (13445251216993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6722626108496 + 6722626108497.

It is an arithmetic number, because the mean of its divisors is an integer number (6722626108497).

Almost surely, 2^{13445252216993} is an apocalyptic number.

It is an amenable number.

13445252216993 is a deficient number, since it is larger than the sum of its proper divisors (1).

13445252216993 is an equidigital number, since it uses as much as digits as its factorization.

13445252216993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13996800, while the sum is 56.

The spelling of 13445252216993 in words is "thirteen trillion, four hundred forty-five billion, two hundred fifty-two million, two hundred sixteen thousand, nine hundred ninety-three".