243117731325773 has 2 divisors, whose sum is σ = 243117731325774. Its totient is φ = 243117731325772.

The previous prime is 243117731325691. The next prime is 243117731325811. The reversal of 243117731325773 is 377523137711342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220741681034884 + 22376050290889 = 14857378^2 + 4730333^2 .

It is a cyclic number.

It is not a de Polignac number, because 243117731325773 - 2¹⁶ = 243117731260237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243117731325373) 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, 121558865662886 + 121558865662887.

It is an arithmetic number, because the mean of its divisors is an integer number (121558865662887).

Almost surely, 2^{243117731325773} is an apocalyptic number.

It is an amenable number.

243117731325773 is a deficient number, since it is larger than the sum of its proper divisors (1).

243117731325773 is an equidigital number, since it uses as much as digits as its factorization.

243117731325773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15558480, while the sum is 56.

The spelling of 243117731325773 in words is "two hundred forty-three trillion, one hundred seventeen billion, seven hundred thirty-one million, three hundred twenty-five thousand, seven hundred seventy-three".