243033515140 has 48 divisors (see below), whose sum is σ = 549672722928. Its totient is φ = 89728418304.

The previous prime is 243033515119. The next prime is 243033515209. The reversal of 243033515140 is 41515330342.

It can be written as a sum of positive squares in 8 ways, for example, as 24600667716 + 218432847424 = 156846^2 + 467368^2 .

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, 4249374 + ... + 4306186.

It is an arithmetic number, because the mean of its divisors is an integer number (11451515061).

Almost surely, 2^243033515140 is an apocalyptic number.

243033515140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243033515140 is an abundant number, since it is smaller than the sum of its proper divisors (306639207788).

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

243033515140 is a wasteful number, since it uses less digits than its factorization.

243033515140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73288 (or 73286 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 243033515140 its reverse (41515330342), we get a palindrome (284548845482).

The spelling of 243033515140 in words is "two hundred forty-three billion, thirty-three million, five hundred fifteen thousand, one hundred forty".