19218403220143 has 2 divisors, whose sum is σ = 19218403220144. Its totient is φ = 19218403220142.

The previous prime is 19218403220117. The next prime is 19218403220197. The reversal of 19218403220143 is 34102230481291.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19218403220143 - 2¹³ = 19218403211951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19218403220096 and 19218403220105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19218403223143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9609201610071 + 9609201610072.

It is an arithmetic number, because the mean of its divisors is an integer number (9609201610072).

Almost surely, 2^{19218403220143} is an apocalyptic number.

19218403220143 is a deficient number, since it is larger than the sum of its proper divisors (1).

19218403220143 is an equidigital number, since it uses as much as digits as its factorization.

19218403220143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 19218403220143 in words is "nineteen trillion, two hundred eighteen billion, four hundred three million, two hundred twenty thousand, one hundred forty-three".