218304728802 has 32 divisors (see below), whose sum is σ = 485451586560. Its totient is φ = 72718747920.

The previous prime is 218304728797. The next prime is 218304728809. The reversal of 218304728802 is 208827403812.

218304728802 is a `hidden beast` number, since 21 + 83 + 0 + 472 + 8 + 80 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (218304728809) 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, 1294693 + ... + 1453560.

It is an arithmetic number, because the mean of its divisors is an integer number (15170362080).

Almost surely, 2^218304728802 is an apocalyptic number.

218304728802 is an abundant number, since it is smaller than the sum of its proper divisors (267146857758).

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

218304728802 is a wasteful number, since it uses less digits than its factorization.

218304728802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749735 (or 2749729 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The spelling of 218304728802 in words is "two hundred eighteen billion, three hundred four million, seven hundred twenty-eight thousand, eight hundred two".