243422109673 has 2 divisors, whose sum is σ = 243422109674. Its totient is φ = 243422109672.

The previous prime is 243422109653. The next prime is 243422109731. The reversal of 243422109673 is 376901224342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211735261609 + 31686848064 = 460147^2 + 178008^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243422109673 is a prime.

It is not a weakly prime, because it can be changed into another prime (243422109613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121711054836 + 121711054837.

It is an arithmetic number, because the mean of its divisors is an integer number (121711054837).

Almost surely, 2^243422109673 is an apocalyptic number.

It is an amenable number.

243422109673 is a deficient number, since it is larger than the sum of its proper divisors (1).

243422109673 is an equidigital number, since it uses as much as digits as its factorization.

243422109673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 43.

The spelling of 243422109673 in words is "two hundred forty-three billion, four hundred twenty-two million, one hundred nine thousand, six hundred seventy-three".