2218381678259 has 2 divisors, whose sum is σ = 2218381678260. Its totient is φ = 2218381678258.

The previous prime is 2218381678003. The next prime is 2218381678307. The reversal of 2218381678259 is 9528761838122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2218381678259 - 2⁸ = 2218381678003 is a prime.

It is a super-3 number, since 3×2218381678259³ (a number of 38 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2218381674259) 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, 1109190839129 + 1109190839130.

It is an arithmetic number, because the mean of its divisors is an integer number (1109190839130).

Almost surely, 2^{2218381678259} is an apocalyptic number.

2218381678259 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218381678259 is an equidigital number, since it uses as much as digits as its factorization.

2218381678259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23224320, while the sum is 62.

The spelling of 2218381678259 in words is "two trillion, two hundred eighteen billion, three hundred eighty-one million, six hundred seventy-eight thousand, two hundred fifty-nine".