218237224945 has 16 divisors (see below), whose sum is σ = 268742073600. Its totient is φ = 170033097600.

The previous prime is 218237224937. The next prime is 218237224951. The reversal of 218237224945 is 549422732812.

It is not a de Polignac number, because 218237224945 - 2³ = 218237224937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 815145 + ... + 1049254.

It is an arithmetic number, because the mean of its divisors is an integer number (16796379600).

Almost surely, 2^218237224945 is an apocalyptic number.

It is an amenable number.

218237224945 is a deficient number, since it is larger than the sum of its proper divisors (50504848655).

218237224945 is a wasteful number, since it uses less digits than its factorization.

218237224945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865016.

The product of its digits is 1935360, while the sum is 49.

The spelling of 218237224945 in words is "two hundred eighteen billion, two hundred thirty-seven million, two hundred twenty-four thousand, nine hundred forty-five".