218524085387863 has 2 divisors, whose sum is σ = 218524085387864. Its totient is φ = 218524085387862.

The previous prime is 218524085387849. The next prime is 218524085387887. The reversal of 218524085387863 is 368783580425812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218524085387863 - 2³³ = 218515495453271 is a prime.

It is a super-2 number, since 2×218524085387863² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 218524085387792 and 218524085387801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218524085387833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109262042693931 + 109262042693932.

It is an arithmetic number, because the mean of its divisors is an integer number (109262042693932).

Almost surely, 2^{218524085387863} is an apocalyptic number.

218524085387863 is a deficient number, since it is larger than the sum of its proper divisors (1).

218524085387863 is an equidigital number, since it uses as much as digits as its factorization.

218524085387863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 619315200, while the sum is 70.

The spelling of 218524085387863 in words is "two hundred eighteen trillion, five hundred twenty-four billion, eighty-five million, three hundred eighty-seven thousand, eight hundred sixty-three".