218375545208 has 8 divisors (see below), whose sum is σ = 409454147280. Its totient is φ = 109187772600.

The previous prime is 218375545207. The next prime is 218375545273. The reversal of 218375545208 is 802545573812.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218375545207) 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 as a sum of consecutive naturals, namely, 13648471568 + ... + 13648471583.

It is an arithmetic number, because the mean of its divisors is an integer number (51181768410).

Almost surely, 2^218375545208 is an apocalyptic number.

It is an amenable number.

218375545208 is a deficient number, since it is larger than the sum of its proper divisors (191078602072).

218375545208 is a wasteful number, since it uses less digits than its factorization.

218375545208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27296943157 (or 27296943153 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 50.

The spelling of 218375545208 in words is "two hundred eighteen billion, three hundred seventy-five million, five hundred forty-five thousand, two hundred eight".