218681869932 has 60 divisors (see below), whose sum is σ = 575184967896. Its totient is φ = 72446736960.

The previous prime is 218681869871. The next prime is 218681869937. The reversal of 218681869932 is 239968186812.

218681869932 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 218681869932.

It is not an unprimeable number, because it can be changed into a prime (218681869937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2017569 + ... + 2123192.

Almost surely, 2^218681869932 is an apocalyptic number.

It is an amenable number.

218681869932 is an abundant number, since it is smaller than the sum of its proper divisors (356503097964).

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

218681869932 is a wasteful number, since it uses less digits than its factorization.

218681869932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140940 (or 4140929 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 63.

It can be divided in two parts, 2186818 and 69932, that added together give a triangular number (2256750 = T₂₁₂₄).

The spelling of 218681869932 in words is "two hundred eighteen billion, six hundred eighty-one million, eight hundred sixty-nine thousand, nine hundred thirty-two".