243023566109 has 8 divisors (see below), whose sum is σ = 245838516000. Its totient is φ = 240219259632.

The previous prime is 243023566103. The next prime is 243023566189. The reversal of 243023566109 is 901665320342.

243023566109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243023566109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243023566103) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2614919 + ... + 2706260.

It is an arithmetic number, because the mean of its divisors is an integer number (30729814500).

Almost surely, 2^243023566109 is an apocalyptic number.

It is an amenable number.

243023566109 is a deficient number, since it is larger than the sum of its proper divisors (2814949891).

243023566109 is a wasteful number, since it uses less digits than its factorization.

243023566109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5321707.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 243023566109 in words is "two hundred forty-three billion, twenty-three million, five hundred sixty-six thousand, one hundred nine".