218860925920 has 384 divisors, whose sum is σ = 676165190400. Its totient is φ = 65065254912.

The previous prime is 218860925917. The next prime is 218860925947. The reversal of 218860925920 is 29529068812.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15615876 + ... + 15629884.

It is an arithmetic number, because the mean of its divisors is an integer number (1760846850).

Almost surely, 2^218860925920 is an apocalyptic number.

218860925920 is a gapful number since it is divisible by the number (20) 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 218860925920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338082595200).

218860925920 is an abundant number, since it is smaller than the sum of its proper divisors (457304264480).

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

218860925920 is a wasteful number, since it uses less digits than its factorization.

218860925920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14110 (or 14102 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The spelling of 218860925920 in words is "two hundred eighteen billion, eight hundred sixty million, nine hundred twenty-five thousand, nine hundred twenty".