243044020040 has 64 divisors (see below), whose sum is σ = 553222949760. Its totient is φ = 96088112640.

The previous prime is 243044020039. The next prime is 243044020067. The reversal of 243044020040 is 40020440342.

243044020040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 243044019988 and 243044020015.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2089907 + ... + 2203133.

It is an arithmetic number, because the mean of its divisors is an integer number (8644108590).

Almost surely, 2^243044020040 is an apocalyptic number.

243044020040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243044020040 is an abundant number, since it is smaller than the sum of its proper divisors (310178929720).

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

243044020040 is a wasteful number, since it uses less digits than its factorization.

243044020040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113862 (or 113858 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 243044020040 its reverse (40020440342), we get a palindrome (283064460382).

The spelling of 243044020040 in words is "two hundred forty-three billion, forty-four million, twenty thousand, forty".