218001521448814 has 16 divisors (see below), whose sum is σ = 331677441770400. Its totient is φ = 107452526547744.

The previous prime is 218001521448793. The next prime is 218001521448833. The reversal of 218001521448814 is 418844125100812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2538045834 + ... + 2538131725.

It is an arithmetic number, because the mean of its divisors is an integer number (20729840110650).

Almost surely, 2^{218001521448814} is an apocalyptic number.

218001521448814 is a deficient number, since it is larger than the sum of its proper divisors (113675920321586).

218001521448814 is a wasteful number, since it uses less digits than its factorization.

218001521448814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5076177867.

The product of its (nonzero) digits is 655360, while the sum is 49.

The spelling of 218001521448814 in words is "two hundred eighteen trillion, one billion, five hundred twenty-one million, four hundred forty-eight thousand, eight hundred fourteen".