218549872801 has 16 divisors (see below), whose sum is σ = 237470704128. Its totient is φ = 199936584000.

The previous prime is 218549872799. The next prime is 218549872811. The reversal of 218549872801 is 108278945812.

It is a cyclic number.

It is not a de Polignac number, because 218549872801 - 2¹ = 218549872799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218549872811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716895 + ... + 975211.

It is an arithmetic number, because the mean of its divisors is an integer number (14841919008).

Almost surely, 2^218549872801 is an apocalyptic number.

It is an amenable number.

218549872801 is a deficient number, since it is larger than the sum of its proper divisors (18920831327).

218549872801 is a wasteful number, since it uses less digits than its factorization.

218549872801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258912.

The product of its (nonzero) digits is 2580480, while the sum is 55.

The spelling of 218549872801 in words is "two hundred eighteen billion, five hundred forty-nine million, eight hundred seventy-two thousand, eight hundred one".