218730037812 has 96 divisors (see below), whose sum is σ = 625665116160. Its totient is φ = 58523076480.

The previous prime is 218730037783. The next prime is 218730037831.

218730037812 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2731512 + ... + 2810447.

It is an arithmetic number, because the mean of its divisors is an integer number (6517344960).

Almost surely, 2^218730037812 is an apocalyptic number.

218730037812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

218730037812 is an abundant number, since it is smaller than the sum of its proper divisors (406935078348).

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

218730037812 is a wasteful number, since it uses less digits than its factorization.

218730037812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5542013 (or 5542011 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 218730037812 in words is "two hundred eighteen billion, seven hundred thirty million, thirty-seven thousand, eight hundred twelve".