243644241166 has 32 divisors (see below), whose sum is σ = 387763925760. Its totient is φ = 114492793536.

The previous prime is 243644241161. The next prime is 243644241173. The reversal of 243644241166 is 661142446342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243644241161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8351481 + ... + 8380603.

It is an arithmetic number, because the mean of its divisors is an integer number (12117622680).

Almost surely, 2^243644241166 is an apocalyptic number.

243644241166 is a deficient number, since it is larger than the sum of its proper divisors (144119684594).

243644241166 is a wasteful number, since it uses less digits than its factorization.

243644241166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30888.

The product of its digits is 663552, while the sum is 43.

The spelling of 243644241166 in words is "two hundred forty-three billion, six hundred forty-four million, two hundred forty-one thousand, one hundred sixty-six".