43206867689 has 2 divisors, whose sum is σ = 43206867690. Its totient is φ = 43206867688.

The previous prime is 43206867661. The next prime is 43206867713. The reversal of 43206867689 is 98676860234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30121338025 + 13085529664 = 173555^2 + 114392^2 .

It is a cyclic number.

It is not a de Polignac number, because 43206867689 - 2²⁸ = 42938432233 is a prime.

It is not a weakly prime, because it can be changed into another prime (43206867289) 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, 21603433844 + 21603433845.

It is an arithmetic number, because the mean of its divisors is an integer number (21603433845).

Almost surely, 2^43206867689 is an apocalyptic number.

It is an amenable number.

43206867689 is a deficient number, since it is larger than the sum of its proper divisors (1).

43206867689 is an equidigital number, since it uses as much as digits as its factorization.

43206867689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20901888, while the sum is 59.

The spelling of 43206867689 in words is "forty-three billion, two hundred six million, eight hundred sixty-seven thousand, six hundred eighty-nine".