11660211611 has 2 divisors, whose sum is σ = 11660211612. Its totient is φ = 11660211610.

The previous prime is 11660211601. The next prime is 11660211677. The reversal of 11660211611 is 11611206611.

11660211611 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11660211611 - 2⁶ = 11660211547 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11660211601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5830105805 + 5830105806.

It is an arithmetic number, because the mean of its divisors is an integer number (5830105806).

Almost surely, 2^11660211611 is an apocalyptic number.

11660211611 is a deficient number, since it is larger than the sum of its proper divisors (1).

11660211611 is an equidigital number, since it uses as much as digits as its factorization.

11660211611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 11660211611 in words is "eleven billion, six hundred sixty million, two hundred eleven thousand, six hundred eleven".