243325039129 has 2 divisors, whose sum is σ = 243325039130. Its totient is φ = 243325039128.

The previous prime is 243325039093. The next prime is 243325039147. The reversal of 243325039129 is 921930523342.

243325039129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242497153600 + 827885529 = 492440^2 + 28773^2 .

It is a cyclic number.

It is not a de Polignac number, because 243325039129 - 2²¹ = 243322941977 is a prime.

It is a super-4 number, since 4×243325039129⁴ (a number of 47 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (243325039159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121662519564 + 121662519565.

It is an arithmetic number, because the mean of its divisors is an integer number (121662519565).

Almost surely, 2^243325039129 is an apocalyptic number.

It is an amenable number.

243325039129 is a deficient number, since it is larger than the sum of its proper divisors (1).

243325039129 is an equidigital number, since it uses as much as digits as its factorization.

243325039129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 43.

The spelling of 243325039129 in words is "two hundred forty-three billion, three hundred twenty-five million, thirty-nine thousand, one hundred twenty-nine".