18866055416743 has 2 divisors, whose sum is σ = 18866055416744. Its totient is φ = 18866055416742.

The previous prime is 18866055416723. The next prime is 18866055416777. The reversal of 18866055416743 is 34761455066881.

It is a weak prime.

It is an emirp because it is prime and its reverse (34761455066881) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18866055416743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18866055416723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9433027708371 + 9433027708372.

It is an arithmetic number, because the mean of its divisors is an integer number (9433027708372).

Almost surely, 2^{18866055416743} is an apocalyptic number.

18866055416743 is a deficient number, since it is larger than the sum of its proper divisors (1).

18866055416743 is an equidigital number, since it uses as much as digits as its factorization.

18866055416743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116121600, while the sum is 64.

The spelling of 18866055416743 in words is "eighteen trillion, eight hundred sixty-six billion, fifty-five million, four hundred sixteen thousand, seven hundred forty-three".