243772255216 has 120 divisors (see below), whose sum is σ = 579213213696. Its totient is φ = 98952094080.

The previous prime is 243772255213. The next prime is 243772255229. The reversal of 243772255216 is 612552277342.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243772255213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1035585 + ... + 1248991.

Almost surely, 2^243772255216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243772255216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289606606848).

243772255216 is an abundant number, since it is smaller than the sum of its proper divisors (335440958480).

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

243772255216 is a wasteful number, since it uses less digits than its factorization.

243772255216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213507 (or 213494 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 46.

The spelling of 243772255216 in words is "two hundred forty-three billion, seven hundred seventy-two million, two hundred fifty-five thousand, two hundred sixteen".