218432272101218 has 8 divisors (see below), whose sum is σ = 374455323602112. Its totient is φ = 93613830900516.

The previous prime is 218432272101217. The next prime is 218432272101221. The reversal of 218432272101218 is 812101272234812.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (218432272101217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7801152575030 + ... + 7801152575057.

It is an arithmetic number, because the mean of its divisors is an integer number (46806915450264).

Almost surely, 2^{218432272101218} is an apocalyptic number.

218432272101218 is a deficient number, since it is larger than the sum of its proper divisors (156023051500894).

218432272101218 is a wasteful number, since it uses less digits than its factorization.

218432272101218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15602305150096.

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 218432272101218 in words is "two hundred eighteen trillion, four hundred thirty-two billion, two hundred seventy-two million, one hundred one thousand, two hundred eighteen".