218568873340 has 24 divisors (see below), whose sum is σ = 459027111312. Its totient is φ = 87421363200.

The previous prime is 218568873331. The next prime is 218568873359. The reversal of 218568873340 is 43378865812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91414 + ... + 667453.

It is an arithmetic number, because the mean of its divisors is an integer number (19126129638).

Almost surely, 2^218568873340 is an apocalyptic number.

218568873340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218568873340 is an abundant number, since it is smaller than the sum of its proper divisors (240458237972).

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

218568873340 is a wasteful number, since it uses less digits than its factorization.

218568873340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773277 (or 773275 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 218568873340 in words is "two hundred eighteen billion, five hundred sixty-eight million, eight hundred seventy-three thousand, three hundred forty".