243104522081 has 2 divisors, whose sum is σ = 243104522082. Its totient is φ = 243104522080.

The previous prime is 243104522071. The next prime is 243104522083. The reversal of 243104522081 is 180225401342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184140541456 + 58963980625 = 429116^2 + 242825^2 .

It is a cyclic number.

It is not a de Polignac number, because 243104522081 - 2²⁶ = 243037413217 is a prime.

It is a super-2 number, since 2×243104522081² (a number of 24 digits) contains 22 as substring.

Together with 243104522083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (243104522083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121552261040 + 121552261041.

It is an arithmetic number, because the mean of its divisors is an integer number (121552261041).

Almost surely, 2^243104522081 is an apocalyptic number.

It is an amenable number.

243104522081 is a deficient number, since it is larger than the sum of its proper divisors (1).

243104522081 is an equidigital number, since it uses as much as digits as its factorization.

243104522081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 32.

The spelling of 243104522081 in words is "two hundred forty-three billion, one hundred four million, five hundred twenty-two thousand, eighty-one".