243355166741 has 2 divisors, whose sum is σ = 243355166742. Its totient is φ = 243355166740.

The previous prime is 243355166723. The next prime is 243355166759. The reversal of 243355166741 is 147661553342.

It is a balanced prime because it is at equal distance from previous prime (243355166723) and next prime (243355166759).

It can be written as a sum of positive squares in only one way, i.e., 160600562500 + 82754604241 = 400750^2 + 287671^2 .

It is a cyclic number.

It is not a de Polignac number, because 243355166741 - 2²² = 243350972437 is a prime.

It is a super-2 number, since 2×243355166741² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243355136741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121677583370 + 121677583371.

It is an arithmetic number, because the mean of its divisors is an integer number (121677583371).

Almost surely, 2^243355166741 is an apocalyptic number.

It is an amenable number.

243355166741 is a deficient number, since it is larger than the sum of its proper divisors (1).

243355166741 is an equidigital number, since it uses as much as digits as its factorization.

243355166741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 47.

The spelling of 243355166741 in words is "two hundred forty-three billion, three hundred fifty-five million, one hundred sixty-six thousand, seven hundred forty-one".