218883332668 has 96 divisors (see below), whose sum is σ = 514443363840. Its totient is φ = 78697232640.

The previous prime is 218883332573. The next prime is 218883332687. The reversal of 218883332668 is 866233388812.

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, 22693855 + ... + 22703497.

It is an arithmetic number, because the mean of its divisors is an integer number (5358785040).

Almost surely, 2^218883332668 is an apocalyptic number.

218883332668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218883332668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257221681920).

218883332668 is an abundant number, since it is smaller than the sum of its proper divisors (295560031172).

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

218883332668 is a wasteful number, since it uses less digits than its factorization.

218883332668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15347 (or 15345 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 58.

The spelling of 218883332668 in words is "two hundred eighteen billion, eight hundred eighty-three million, three hundred thirty-two thousand, six hundred sixty-eight".