243044015040 has 168 divisors, whose sum is σ = 836313733008. Its totient is φ = 64785100800.

The previous prime is 243044015017. The next prime is 243044015059. The reversal of 243044015040 is 40510440342.

It is a happy number.

243044015040 is a `hidden beast` number, since 2 + 4 + 30 + 440 + 150 + 40 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 243044014995 and 243044015013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7567015 + ... + 7599065.

Almost surely, 2^243044015040 is an apocalyptic number.

243044015040 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 243044015040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418156866504).

243044015040 is an abundant number, since it is smaller than the sum of its proper divisors (593269717968).

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

243044015040 is a wasteful number, since it uses less digits than its factorization.

243044015040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34707 (or 34694 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 243044015040 its reverse (40510440342), we get a palindrome (283554455382).

The spelling of 243044015040 in words is "two hundred forty-three billion, forty-four million, fifteen thousand, forty".