43305453338321 has 2 divisors, whose sum is σ = 43305453338322. Its totient is φ = 43305453338320.

The previous prime is 43305453338309. The next prime is 43305453338339. The reversal of 43305453338321 is 12383335450334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24409913728321 + 18895539610000 = 4940639^2 + 4346900^2 .

It is a cyclic number.

It is not a de Polignac number, because 43305453338321 - 2¹⁰ = 43305453337297 is a prime.

It is not a weakly prime, because it can be changed into another prime (43305453334321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21652726669160 + 21652726669161.

It is an arithmetic number, because the mean of its divisors is an integer number (21652726669161).

Almost surely, 2^{43305453338321} is an apocalyptic number.

It is an amenable number.

43305453338321 is a deficient number, since it is larger than the sum of its proper divisors (1).

43305453338321 is an equidigital number, since it uses as much as digits as its factorization.

43305453338321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 47.

Adding to 43305453338321 its reverse (12383335450334), we get a palindrome (55688788788655).

The spelling of 43305453338321 in words is "forty-three trillion, three hundred five billion, four hundred fifty-three million, three hundred thirty-eight thousand, three hundred twenty-one".