18164016671 has 2 divisors, whose sum is σ = 18164016672. Its totient is φ = 18164016670.

The previous prime is 18164016581. The next prime is 18164016721. The reversal of 18164016671 is 17661046181.

It is a strong prime.

It is an emirp because it is prime and its reverse (17661046181) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18164016671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18164016071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9082008335 + 9082008336.

It is an arithmetic number, because the mean of its divisors is an integer number (9082008336).

Almost surely, 2^18164016671 is an apocalyptic number.

18164016671 is a deficient number, since it is larger than the sum of its proper divisors (1).

18164016671 is an equidigital number, since it uses as much as digits as its factorization.

18164016671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 18164016671 in words is "eighteen billion, one hundred sixty-four million, sixteen thousand, six hundred seventy-one".