11130866891 has 2 divisors, whose sum is σ = 11130866892. Its totient is φ = 11130866890.

The previous prime is 11130866869. The next prime is 11130866893. The reversal of 11130866891 is 19866803111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11130866891 - 2⁶ = 11130866827 is a prime.

It is a Sophie Germain prime.

Together with 11130866893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11130866893) 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, 5565433445 + 5565433446.

It is an arithmetic number, because the mean of its divisors is an integer number (5565433446).

Almost surely, 2^11130866891 is an apocalyptic number.

11130866891 is a deficient number, since it is larger than the sum of its proper divisors (1).

11130866891 is an equidigital number, since it uses as much as digits as its factorization.

11130866891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 11130866891 in words is "eleven billion, one hundred thirty million, eight hundred sixty-six thousand, eight hundred ninety-one".