243110020073 has 2 divisors, whose sum is σ = 243110020074. Its totient is φ = 243110020072.

The previous prime is 243110020063. The next prime is 243110020159. The reversal of 243110020073 is 370020011342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181976468569 + 61133551504 = 426587^2 + 247252^2 .

It is a cyclic number.

It is not a de Polignac number, because 243110020073 - 2¹² = 243110015977 is a prime.

It is not a weakly prime, because it can be changed into another prime (243110020063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121555010036 + 121555010037.

It is an arithmetic number, because the mean of its divisors is an integer number (121555010037).

Almost surely, 2^243110020073 is an apocalyptic number.

It is an amenable number.

243110020073 is a deficient number, since it is larger than the sum of its proper divisors (1).

243110020073 is an equidigital number, since it uses as much as digits as its factorization.

243110020073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

The spelling of 243110020073 in words is "two hundred forty-three billion, one hundred ten million, twenty thousand, seventy-three".