243016074428213 has 2 divisors, whose sum is σ = 243016074428214. Its totient is φ = 243016074428212.

The previous prime is 243016074428209. The next prime is 243016074428251. The reversal of 243016074428213 is 312824470610342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229889822245924 + 13126252182289 = 15162118^2 + 3623017^2 .

It is a cyclic number.

It is not a de Polignac number, because 243016074428213 - 2² = 243016074428209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243016074428513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121508037214106 + 121508037214107.

It is an arithmetic number, because the mean of its divisors is an integer number (121508037214107).

Almost surely, 2^{243016074428213} is an apocalyptic number.

It is an amenable number.

243016074428213 is a deficient number, since it is larger than the sum of its proper divisors (1).

243016074428213 is an equidigital number, since it uses as much as digits as its factorization.

243016074428213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 47.

The spelling of 243016074428213 in words is "two hundred forty-three trillion, sixteen billion, seventy-four million, four hundred twenty-eight thousand, two hundred thirteen".