218098728289 has 8 divisors (see below), whose sum is σ = 236431022912. Its totient is φ = 199988643600.

The previous prime is 218098728283. The next prime is 218098728293. The reversal of 218098728289 is 982827890812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 218098728289 - 2¹⁹ = 218098204001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 218098728289.

It is not an unprimeable number, because it can be changed into a prime (218098728283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55550439 + ... + 55554364.

It is an arithmetic number, because the mean of its divisors is an integer number (29553877864).

Almost surely, 2^218098728289 is an apocalyptic number.

It is an amenable number.

218098728289 is a deficient number, since it is larger than the sum of its proper divisors (18332294623).

218098728289 is a wasteful number, since it uses less digits than its factorization.

218098728289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111104967.

The product of its (nonzero) digits is 18579456, while the sum is 64.

The spelling of 218098728289 in words is "two hundred eighteen billion, ninety-eight million, seven hundred twenty-eight thousand, two hundred eighty-nine".