218409268606 has 16 divisors (see below), whose sum is σ = 333272666160. Its totient is φ = 107334164800.

The previous prime is 218409268603. The next prime is 218409268607. The reversal of 218409268606 is 606862904812.

It is a super-2 number, since 2×218409268606² (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 (218409268603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3918436 + ... + 3973783.

It is an arithmetic number, because the mean of its divisors is an integer number (20829541635).

Almost surely, 2^218409268606 is an apocalyptic number.

218409268606 is a deficient number, since it is larger than the sum of its proper divisors (114863397554).

218409268606 is a wasteful number, since it uses less digits than its factorization.

218409268606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7892459.

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 218409268606 in words is "two hundred eighteen billion, four hundred nine million, two hundred sixty-eight thousand, six hundred six".