243002188161 has 16 divisors (see below), whose sum is σ = 360045403200. Its totient is φ = 161982486144.

The previous prime is 243002188133. The next prime is 243002188183. The reversal of 243002188161 is 161881200342.

243002188161 is a `hidden beast` number, since 2 + 4 + 300 + 218 + 81 + 61 = 666.

It is not a de Polignac number, because 243002188161 - 2¹⁰ = 243002187137 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243002188061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290271 + ... + 755156.

It is an arithmetic number, because the mean of its divisors is an integer number (22502837700).

Almost surely, 2^243002188161 is an apocalyptic number.

It is an amenable number.

243002188161 is a deficient number, since it is larger than the sum of its proper divisors (117043215039).

243002188161 is a wasteful number, since it uses less digits than its factorization.

243002188161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054045 (or 1054039 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 243002188161 in words is "two hundred forty-three billion, two million, one hundred eighty-eight thousand, one hundred sixty-one".