218206714255 has 16 divisors (see below), whose sum is σ = 262076083200. Its totient is φ = 174413440288.

The previous prime is 218206714247. The next prime is 218206714259. The reversal of 218206714255 is 552417602812.

218206714255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 218206714255 - 2³ = 218206714247 is a prime.

It is a super-2 number, since 2×218206714255² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218206714259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48890154 + ... + 48894616.

It is an arithmetic number, because the mean of its divisors is an integer number (16379755200).

Almost surely, 2^218206714255 is an apocalyptic number.

218206714255 is a deficient number, since it is larger than the sum of its proper divisors (43869368945).

218206714255 is a wasteful number, since it uses less digits than its factorization.

218206714255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10790.

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 218206714255 in words is "two hundred eighteen billion, two hundred six million, seven hundred fourteen thousand, two hundred fifty-five".