243006166456240 has 80 divisors (see below), whose sum is σ = 616448731247136. Its totient is φ = 88352011008000.

The previous prime is 243006166456237. The next prime is 243006166456247. The reversal of 243006166456240 is 42654661600342.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (243006166456247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16056861 + ... + 27273340.

Almost surely, 2^{243006166456240} is an apocalyptic number.

243006166456240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243006166456240 is an abundant number, since it is smaller than the sum of its proper divisors (373442564790896).

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

243006166456240 is a wasteful number, since it uses less digits than its factorization.

243006166456240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43336598 (or 43336592 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 49.

The spelling of 243006166456240 in words is "two hundred forty-three trillion, six billion, one hundred sixty-six million, four hundred fifty-six thousand, two hundred forty".