218838552179 has 16 divisors (see below), whose sum is σ = 235972058112. Its totient is φ = 201748074528.

The previous prime is 218838552167. The next prime is 218838552181. The reversal of 218838552179 is 971255838812.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-218838552179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218838552139) 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 15 ways as a sum of consecutive naturals, for example, 46529342 + ... + 46534044.

It is an arithmetic number, because the mean of its divisors is an integer number (14748253632).

Almost surely, 2^218838552179 is an apocalyptic number.

218838552179 is a deficient number, since it is larger than the sum of its proper divisors (17133505933).

218838552179 is a wasteful number, since it uses less digits than its factorization.

218838552179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8506.

The product of its digits is 9676800, while the sum is 59.

The spelling of 218838552179 in words is "two hundred eighteen billion, eight hundred thirty-eight million, five hundred fifty-two thousand, one hundred seventy-nine".