218018389011 has 32 divisors (see below), whose sum is σ = 299178827520. Its totient is φ = 141169392000.

The previous prime is 218018388979. The next prime is 218018389013. The reversal of 218018389011 is 110983810812.

It is not a de Polignac number, because 218018389011 - 2⁵ = 218018388979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (218018389013) 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 31 ways as a sum of consecutive naturals, for example, 6989496 + ... + 7020618.

It is an arithmetic number, because the mean of its divisors is an integer number (9349338360).

Almost surely, 2^218018389011 is an apocalyptic number.

218018389011 is a deficient number, since it is larger than the sum of its proper divisors (81160438509).

218018389011 is a wasteful number, since it uses less digits than its factorization.

218018389011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31667.

The product of its (nonzero) digits is 27648, while the sum is 42.

The spelling of 218018389011 in words is "two hundred eighteen billion, eighteen million, three hundred eighty-nine thousand, eleven".