18318128077303 has 2 divisors, whose sum is σ = 18318128077304. Its totient is φ = 18318128077302.

The previous prime is 18318128077283. The next prime is 18318128077343. The reversal of 18318128077303 is 30377082181381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18318128077303 - 2⁹ = 18318128076791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18318128077343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9159064038651 + 9159064038652.

It is an arithmetic number, because the mean of its divisors is an integer number (9159064038652).

Almost surely, 2^{18318128077303} is an apocalyptic number.

18318128077303 is a deficient number, since it is larger than the sum of its proper divisors (1).

18318128077303 is an equidigital number, since it uses as much as digits as its factorization.

18318128077303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 18318128077303 in words is "eighteen trillion, three hundred eighteen billion, one hundred twenty-eight million, seventy-seven thousand, three hundred three".