43255330081 has 2 divisors, whose sum is σ = 43255330082. Its totient is φ = 43255330080.

The previous prime is 43255329967. The next prime is 43255330093. The reversal of 43255330081 is 18003355234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43220331025 + 34999056 = 207895^2 + 5916^2 .

It is a cyclic number.

It is not a de Polignac number, because 43255330081 - 2¹⁵ = 43255297313 is a prime.

It is a super-2 number, since 2×43255330081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43255334081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21627665040 + 21627665041.

It is an arithmetic number, because the mean of its divisors is an integer number (21627665041).

Almost surely, 2^43255330081 is an apocalyptic number.

It is an amenable number.

43255330081 is a deficient number, since it is larger than the sum of its proper divisors (1).

43255330081 is an equidigital number, since it uses as much as digits as its factorization.

43255330081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 43255330081 in words is "forty-three billion, two hundred fifty-five million, three hundred thirty thousand, eighty-one".