243215116462753 has 2 divisors, whose sum is σ = 243215116462754. Its totient is φ = 243215116462752.

The previous prime is 243215116462579. The next prime is 243215116462763. The reversal of 243215116462753 is 357264611512342.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210013919308449 + 33201197154304 = 14491857^2 + 5762048^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243215116462753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243215116462753.

It is not a weakly prime, because it can be changed into another prime (243215116462763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121607558231376 + 121607558231377.

It is an arithmetic number, because the mean of its divisors is an integer number (121607558231377).

Almost surely, 2^{243215116462753} is an apocalyptic number.

It is an amenable number.

243215116462753 is a deficient number, since it is larger than the sum of its proper divisors (1).

243215116462753 is an equidigital number, since it uses as much as digits as its factorization.

243215116462753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 52.

The spelling of 243215116462753 in words is "two hundred forty-three trillion, two hundred fifteen billion, one hundred sixteen million, four hundred sixty-two thousand, seven hundred fifty-three".