43608582109 has 2 divisors, whose sum is σ = 43608582110. Its totient is φ = 43608582108.

The previous prime is 43608582077. The next prime is 43608582137. The reversal of 43608582109 is 90128580634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24948202500 + 18660379609 = 157950^2 + 136603^2 .

It is a cyclic number.

It is not a de Polignac number, because 43608582109 - 2⁵ = 43608582077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43608522109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21804291054 + 21804291055.

It is an arithmetic number, because the mean of its divisors is an integer number (21804291055).

Almost surely, 2^43608582109 is an apocalyptic number.

It is an amenable number.

43608582109 is a deficient number, since it is larger than the sum of its proper divisors (1).

43608582109 is an equidigital number, since it uses as much as digits as its factorization.

43608582109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 43608582109 in words is "forty-three billion, six hundred eight million, five hundred eighty-two thousand, one hundred nine".