243423200112040 has 128 divisors (see below), whose sum is σ = 593777513952000. Its totient is φ = 89810525385984.

The previous prime is 243423200111953. The next prime is 243423200112073. The reversal of 243423200112040 is 40211002324342.

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, 113799501 + ... + 115918819.

It is an arithmetic number, because the mean of its divisors is an integer number (4638886827750).

Almost surely, 2^{243423200112040} is an apocalyptic number.

243423200112040 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 243423200112040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296888756976000).

243423200112040 is an abundant number, since it is smaller than the sum of its proper divisors (350354313839960).

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

243423200112040 is a wasteful number, since it uses less digits than its factorization.

243423200112040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120676 (or 2120646 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 243423200112040 its reverse (40211002324342), we get a palindrome (283634202436382).

The spelling of 243423200112040 in words is "two hundred forty-three trillion, four hundred twenty-three billion, two hundred million, one hundred twelve thousand, forty".