243247013109 has 12 divisors (see below), whose sum is σ = 351924424800. Its totient is φ = 161902693224.

The previous prime is 243247013069. The next prime is 243247013111. The reversal of 243247013109 is 901310742342.

It is a happy number.

243247013109 is a `hidden beast` number, since 24 + 32 + 470 + 131 + 0 + 9 = 666.

It is not a de Polignac number, because 243247013109 - 2²¹ = 243244915957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243247013179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21825969 + ... + 21837110.

It is an arithmetic number, because the mean of its divisors is an integer number (29327035400).

Almost surely, 2^243247013109 is an apocalyptic number.

It is an amenable number.

243247013109 is a deficient number, since it is larger than the sum of its proper divisors (108677411691).

243247013109 is a wasteful number, since it uses less digits than its factorization.

243247013109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43663704 (or 43663701 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 243247013109 in words is "two hundred forty-three billion, two hundred forty-seven million, thirteen thousand, one hundred nine".