218663428530 has 32 divisors (see below), whose sum is σ = 524808232704. Its totient is φ = 58308469376.

The previous prime is 218663428517. The next prime is 218663428573. The reversal of 218663428530 is 35824366812.

218663428530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 218663428530.

It is an unprimeable number.

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, 1108342 + ... + 1290638.

It is an arithmetic number, because the mean of its divisors is an integer number (16400257272).

Almost surely, 2^218663428530 is an apocalyptic number.

218663428530 is an abundant number, since it is smaller than the sum of its proper divisors (306144804174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218663428530 is a wasteful number, since it uses less digits than its factorization.

218663428530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222290.

The product of its (nonzero) digits is 1658880, while the sum is 48.

The spelling of 218663428530 in words is "two hundred eighteen billion, six hundred sixty-three million, four hundred twenty-eight thousand, five hundred thirty".