218857052305 has 16 divisors (see below), whose sum is σ = 263407564800. Its totient is φ = 174566567808.

The previous prime is 218857052261. The next prime is 218857052341. The reversal of 218857052305 is 503250758812.

218857052305 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 218857052305 - 2³⁷ = 81418098833 is a prime.

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, 5820094 + ... + 5857576.

It is an arithmetic number, because the mean of its divisors is an integer number (16462972800).

Almost surely, 2^218857052305 is an apocalyptic number.

It is an amenable number.

218857052305 is a deficient number, since it is larger than the sum of its proper divisors (44550512495).

218857052305 is a wasteful number, since it uses less digits than its factorization.

218857052305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40920.

The product of its (nonzero) digits is 672000, while the sum is 46.

The spelling of 218857052305 in words is "two hundred eighteen billion, eight hundred fifty-seven million, fifty-two thousand, three hundred five".