11130666991 has 2 divisors, whose sum is σ = 11130666992. Its totient is φ = 11130666990.

The previous prime is 11130666983. The next prime is 11130667033. The reversal of 11130666991 is 19966603111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11130666991 - 2³ = 11130666983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11130666941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565333495 + 5565333496.

It is an arithmetic number, because the mean of its divisors is an integer number (5565333496).

Almost surely, 2^11130666991 is an apocalyptic number.

11130666991 is a deficient number, since it is larger than the sum of its proper divisors (1).

11130666991 is an equidigital number, since it uses as much as digits as its factorization.

11130666991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 43.

The spelling of 11130666991 in words is "eleven billion, one hundred thirty million, six hundred sixty-six thousand, nine hundred ninety-one".