43566665704141 has 2 divisors, whose sum is σ = 43566665704142. Its totient is φ = 43566665704140.

The previous prime is 43566665704129. The next prime is 43566665704183. The reversal of 43566665704141 is 14140756666534.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42387638915241 + 1179026788900 = 6510579^2 + 1085830^2 .

It is a cyclic number.

It is not a de Polignac number, because 43566665704141 - 2⁹ = 43566665703629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43566665704241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21783332852070 + 21783332852071.

It is an arithmetic number, because the mean of its divisors is an integer number (21783332852071).

Almost surely, 2^{43566665704141} is an apocalyptic number.

It is an amenable number.

43566665704141 is a deficient number, since it is larger than the sum of its proper divisors (1).

43566665704141 is an equidigital number, since it uses as much as digits as its factorization.

43566665704141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43545600, while the sum is 58.

The spelling of 43566665704141 in words is "forty-three trillion, five hundred sixty-six billion, six hundred sixty-five million, seven hundred four thousand, one hundred forty-one".