243118486753 has 2 divisors, whose sum is σ = 243118486754. Its totient is φ = 243118486752.

The previous prime is 243118486691. The next prime is 243118486867. The reversal of 243118486753 is 357684811342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234670487184 + 8447999569 = 484428^2 + 91913^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243118486753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243118486753.

It is not a weakly prime, because it can be changed into another prime (243118486153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121559243376 + 121559243377.

It is an arithmetic number, because the mean of its divisors is an integer number (121559243377).

Almost surely, 2^243118486753 is an apocalyptic number.

It is an amenable number.

243118486753 is a deficient number, since it is larger than the sum of its proper divisors (1).

243118486753 is an equidigital number, since it uses as much as digits as its factorization.

243118486753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 52.

The spelling of 243118486753 in words is "two hundred forty-three billion, one hundred eighteen million, four hundred eighty-six thousand, seven hundred fifty-three".