243247028876040 has 512 divisors, whose sum is σ = 883368728985600. Its totient is φ = 52408018897920.

The previous prime is 243247028876023. The next prime is 243247028876081. The reversal of 243247028876040 is 40678820742342.

It is a happy number.

It is a super-3 number, since 3×243247028876040³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 401676919 + ... + 402282041.

It is an arithmetic number, because the mean of its divisors is an integer number (1725329548800).

Almost surely, 2^{243247028876040} is an apocalyptic number.

243247028876040 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 243247028876040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441684364492800).

243247028876040 is an abundant number, since it is smaller than the sum of its proper divisors (640121700109560).

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

243247028876040 is a wasteful number, since it uses less digits than its factorization.

243247028876040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605577 (or 605573 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 57.

The spelling of 243247028876040 in words is "two hundred forty-three trillion, two hundred forty-seven billion, twenty-eight million, eight hundred seventy-six thousand, forty".