218449944863 has 2 divisors, whose sum is σ = 218449944864. Its totient is φ = 218449944862.

The previous prime is 218449944773. The next prime is 218449944919. The reversal of 218449944863 is 368449944812.

It is a happy number.

218449944863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 218449944863 - 2²⁰ = 218448896287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 218449944796 and 218449944805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218449944463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109224972431 + 109224972432.

It is an arithmetic number, because the mean of its divisors is an integer number (109224972432).

Almost surely, 2^218449944863 is an apocalyptic number.

218449944863 is a deficient number, since it is larger than the sum of its proper divisors (1).

218449944863 is an equidigital number, since it uses as much as digits as its factorization.

218449944863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47775744, while the sum is 62.

The spelling of 218449944863 in words is "two hundred eighteen billion, four hundred forty-nine million, nine hundred forty-four thousand, eight hundred sixty-three".