43066405989 has 12 divisors (see below), whose sum is σ = 62210181696. Its totient is φ = 28709483112.

The previous prime is 43066405969. The next prime is 43066405997. The reversal of 43066405989 is 98950466034.

43066405989 is a `hidden beast` number, since 4 + 3 + 0 + 6 + 6 + 40 + 598 + 9 = 666.

It is not a de Polignac number, because 43066405989 - 2⁹ = 43066405477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43066405919) 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 in 11 ways as a sum of consecutive naturals, for example, 84804 + ... + 305490.

It is an arithmetic number, because the mean of its divisors is an integer number (5184181808).

Almost surely, 2^43066405989 is an apocalyptic number.

It is an amenable number.

43066405989 is a deficient number, since it is larger than the sum of its proper divisors (19143775707).

43066405989 is a wasteful number, since it uses less digits than its factorization.

43066405989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242376 (or 242373 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 43066405989 in words is "forty-three billion, sixty-six million, four hundred five thousand, nine hundred eighty-nine".