18664800211 has 2 divisors, whose sum is σ = 18664800212. Its totient is φ = 18664800210.

The previous prime is 18664800181. The next prime is 18664800241. The reversal of 18664800211 is 11200846681.

It is a balanced prime because it is at equal distance from previous prime (18664800181) and next prime (18664800241).

It is a cyclic number.

It is not a de Polignac number, because 18664800211 - 2⁷ = 18664800083 is a prime.

It is not a weakly prime, because it can be changed into another prime (18664800241) 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, 9332400105 + 9332400106.

It is an arithmetic number, because the mean of its divisors is an integer number (9332400106).

Almost surely, 2^18664800211 is an apocalyptic number.

18664800211 is a deficient number, since it is larger than the sum of its proper divisors (1).

18664800211 is an equidigital number, since it uses as much as digits as its factorization.

18664800211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 18664800211 in words is "eighteen billion, six hundred sixty-four million, eight hundred thousand, two hundred eleven".