218604218601 has 8 divisors (see below), whose sum is σ = 295465062880. Its totient is φ = 143739760032.

The previous prime is 218604218579. The next prime is 218604218641. The reversal of 218604218601 is 106812406812.

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

It is not a de Polignac number, because 218604218601 - 2²³ = 218595829993 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 218604218601.

It is not an unprimeable number, because it can be changed into a prime (218604218641) 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, 499096171 + ... + 499096608.

It is an arithmetic number, because the mean of its divisors is an integer number (36933132860).

Almost surely, 2^218604218601 is an apocalyptic number.

It is an amenable number.

218604218601 is a deficient number, since it is larger than the sum of its proper divisors (76860844279).

218604218601 is an equidigital number, since it uses as much as digits as its factorization.

218604218601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998192855.

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 218604218601 in words is "two hundred eighteen billion, six hundred four million, two hundred eighteen thousand, six hundred one".