243144201073 has 2 divisors, whose sum is σ = 243144201074. Its totient is φ = 243144201072.

The previous prime is 243144201061. The next prime is 243144201089. The reversal of 243144201073 is 370102441342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168733635984 + 74410565089 = 410772^2 + 272783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243144201073 is a prime.

It is not a weakly prime, because it can be changed into another prime (243144201473) 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 as a sum of consecutive naturals, namely, 121572100536 + 121572100537.

It is an arithmetic number, because the mean of its divisors is an integer number (121572100537).

Almost surely, 2^243144201073 is an apocalyptic number.

It is an amenable number.

243144201073 is a deficient number, since it is larger than the sum of its proper divisors (1).

243144201073 is an equidigital number, since it uses as much as digits as its factorization.

243144201073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

The spelling of 243144201073 in words is "two hundred forty-three billion, one hundred forty-four million, two hundred one thousand, seventy-three".