216724217265400 has 192 divisors, whose sum is σ = 544538003587200. Its totient is φ = 79742190528000.

The previous prime is 216724217265359. The next prime is 216724217265403. The reversal of 216724217265400 is 4562712427612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216724217265403) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1875189615 + ... + 1875305185.

It is an arithmetic number, because the mean of its divisors is an integer number (2836135435350).

Almost surely, 2^{216724217265400} is an apocalyptic number.

216724217265400 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 216724217265400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272269001793600).

216724217265400 is an abundant number, since it is smaller than the sum of its proper divisors (327813786321800).

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

216724217265400 is a wasteful number, since it uses less digits than its factorization.

216724217265400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118110 (or 118101 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 216724217265400 in words is "two hundred sixteen trillion, seven hundred twenty-four billion, two hundred seventeen million, two hundred sixty-five thousand, four hundred".