18030271211 has 2 divisors, whose sum is σ = 18030271212. Its totient is φ = 18030271210.

The previous prime is 18030271201. The next prime is 18030271249. The reversal of 18030271211 is 11217203081.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18030271211 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (18030271201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9015135605 + 9015135606.

It is an arithmetic number, because the mean of its divisors is an integer number (9015135606).

Almost surely, 2^18030271211 is an apocalyptic number.

18030271211 is a deficient number, since it is larger than the sum of its proper divisors (1).

18030271211 is an equidigital number, since it uses as much as digits as its factorization.

18030271211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 26.

Adding to 18030271211 its reverse (11217203081), we get a palindrome (29247474292).

The spelling of 18030271211 in words is "eighteen billion, thirty million, two hundred seventy-one thousand, two hundred eleven".