243100240640 has 144 divisors (see below), whose sum is σ = 608922316800. Its totient is φ = 92812701696.

The previous prime is 243100240609. The next prime is 243100240673. The reversal of 243100240640 is 46042001342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14093141 + ... + 14110379.

It is an arithmetic number, because the mean of its divisors is an integer number (4228627200).

Almost surely, 2^243100240640 is an apocalyptic number.

243100240640 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 243100240640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304461158400).

243100240640 is an abundant number, since it is smaller than the sum of its proper divisors (365822076160).

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

243100240640 is a wasteful number, since it uses less digits than its factorization.

243100240640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17762 (or 17748 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 243100240640 its reverse (46042001342), we get a palindrome (289142241982).

The spelling of 243100240640 in words is "two hundred forty-three billion, one hundred million, two hundred forty thousand, six hundred forty".