18024016081 has 2 divisors, whose sum is σ = 18024016082. Its totient is φ = 18024016080.

The previous prime is 18024016069. The next prime is 18024016093. The reversal of 18024016081 is 18061042081.

It is a balanced prime because it is at equal distance from previous prime (18024016069) and next prime (18024016093).

It can be written as a sum of positive squares in only one way, i.e., 11812211856 + 6211804225 = 108684^2 + 78815^2 .

It is an emirp because it is prime and its reverse (18061042081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18024016081 - 2⁷ = 18024015953 is a prime.

It is a super-2 number, since 2×18024016081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18024016061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9012008040 + 9012008041.

It is an arithmetic number, because the mean of its divisors is an integer number (9012008041).

Almost surely, 2^18024016081 is an apocalyptic number.

It is an amenable number.

18024016081 is a deficient number, since it is larger than the sum of its proper divisors (1).

18024016081 is an equidigital number, since it uses as much as digits as its factorization.

18024016081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 31.

The spelling of 18024016081 in words is "eighteen billion, twenty-four million, sixteen thousand, eighty-one".