11066198881 has 2 divisors, whose sum is σ = 11066198882. Its totient is φ = 11066198880.

The previous prime is 11066198879. The next prime is 11066198939. The reversal of 11066198881 is 18889166011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6059221281 + 5006977600 = 77841^2 + 70760^2 .

It is a cyclic number.

It is not a de Polignac number, because 11066198881 - 2¹ = 11066198879 is a prime.

It is a super-2 number, since 2×11066198881² (a number of 21 digits) contains 22 as substring.

Together with 11066198879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11066118881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5533099440 + 5533099441.

It is an arithmetic number, because the mean of its divisors is an integer number (5533099441).

Almost surely, 2^11066198881 is an apocalyptic number.

It is an amenable number.

11066198881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11066198881 is an equidigital number, since it uses as much as digits as its factorization.

11066198881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 49.

The spelling of 11066198881 in words is "eleven billion, sixty-six million, one hundred ninety-eight thousand, eight hundred eighty-one".