243120138167 has 2 divisors, whose sum is σ = 243120138168. Its totient is φ = 243120138166.

The previous prime is 243120138161. The next prime is 243120138187. The reversal of 243120138167 is 761831021342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243120138167 - 2²⁸ = 242851702711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243120138167.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243120138161) 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 as a sum of consecutive naturals, namely, 121560069083 + 121560069084.

It is an arithmetic number, because the mean of its divisors is an integer number (121560069084).

Almost surely, 2^243120138167 is an apocalyptic number.

243120138167 is a deficient number, since it is larger than the sum of its proper divisors (1).

243120138167 is an equidigital number, since it uses as much as digits as its factorization.

243120138167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 243120138167 in words is "two hundred forty-three billion, one hundred twenty million, one hundred thirty-eight thousand, one hundred sixty-seven".