243433334401 has 2 divisors, whose sum is σ = 243433334402. Its totient is φ = 243433334400.

The previous prime is 243433334341. The next prime is 243433334407. The reversal of 243433334401 is 104433334342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238964545600 + 4468788801 = 488840^2 + 66849^2 .

It is a cyclic number.

It is not a de Polignac number, because 243433334401 - 2¹⁷ = 243433203329 is a prime.

It is not a weakly prime, because it can be changed into another prime (243433334407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121716667200 + 121716667201.

It is an arithmetic number, because the mean of its divisors is an integer number (121716667201).

Almost surely, 2^243433334401 is an apocalyptic number.

It is an amenable number.

243433334401 is a deficient number, since it is larger than the sum of its proper divisors (1).

243433334401 is an equidigital number, since it uses as much as digits as its factorization.

243433334401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 34.

Adding to 243433334401 its reverse (104433334342), we get a palindrome (347866668743).

The spelling of 243433334401 in words is "two hundred forty-three billion, four hundred thirty-three million, three hundred thirty-four thousand, four hundred one".