43066450334321 has 2 divisors, whose sum is σ = 43066450334322. Its totient is φ = 43066450334320.

The previous prime is 43066450334293. The next prime is 43066450334333. The reversal of 43066450334321 is 12343305466034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35131462752400 + 7934987581921 = 5927180^2 + 2816911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43066450334321 is a prime.

It is not a weakly prime, because it can be changed into another prime (43066450334221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21533225167160 + 21533225167161.

It is an arithmetic number, because the mean of its divisors is an integer number (21533225167161).

Almost surely, 2^{43066450334321} is an apocalyptic number.

It is an amenable number.

43066450334321 is a deficient number, since it is larger than the sum of its proper divisors (1).

43066450334321 is an equidigital number, since it uses as much as digits as its factorization.

43066450334321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 44.

The spelling of 43066450334321 in words is "forty-three trillion, sixty-six billion, four hundred fifty million, three hundred thirty-four thousand, three hundred twenty-one".