18471280211 has 2 divisors, whose sum is σ = 18471280212. Its totient is φ = 18471280210.

The previous prime is 18471280199. The next prime is 18471280259. The reversal of 18471280211 is 11208217481.

It is a weak prime.

It is an emirp because it is prime and its reverse (11208217481) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18471280211 is a prime.

It is not a weakly prime, because it can be changed into another prime (18471280811) 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, 9235640105 + 9235640106.

It is an arithmetic number, because the mean of its divisors is an integer number (9235640106).

Almost surely, 2^18471280211 is an apocalyptic number.

18471280211 is a deficient number, since it is larger than the sum of its proper divisors (1).

18471280211 is an equidigital number, since it uses as much as digits as its factorization.

18471280211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7168, while the sum is 35.

Adding to 18471280211 its reverse (11208217481), we get a palindrome (29679497692).

The spelling of 18471280211 in words is "eighteen billion, four hundred seventy-one million, two hundred eighty thousand, two hundred eleven".