243040405044 has 96 divisors (see below), whose sum is σ = 582148578816. Its totient is φ = 78893020800.

The previous prime is 243040404983. The next prime is 243040405063. The reversal of 243040405044 is 440504040342.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 63905647 + ... + 63909449.

It is an arithmetic number, because the mean of its divisors is an integer number (6064047696).

Almost surely, 2^243040405044 is an apocalyptic number.

It is an amenable number.

243040405044 is an abundant number, since it is smaller than the sum of its proper divisors (339108173772).

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

243040405044 is a wasteful number, since it uses less digits than its factorization.

243040405044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765 (or 4763 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 243040405044 its reverse (440504040342), we get a palindrome (683544445386).

The spelling of 243040405044 in words is "two hundred forty-three billion, forty million, four hundred five thousand, forty-four".