243199057920 has 1008 divisors, whose sum is σ = 984332580480. Its totient is φ = 51097632768.

The previous prime is 243199057897. The next prime is 243199057921. The reversal of 243199057920 is 29750991342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243199057921) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1017569161 + ... + 1017569399.

Almost surely, 2^243199057920 is an apocalyptic number.

243199057920 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 243199057920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492166290240).

243199057920 is an abundant number, since it is smaller than the sum of its proper divisors (741133522560).

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

243199057920 is a wasteful number, since it uses less digits than its factorization.

243199057920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 51.

The spelling of 243199057920 in words is "two hundred forty-three billion, one hundred ninety-nine million, fifty-seven thousand, nine hundred twenty".