43045745666 has 16 divisors (see below), whose sum is σ = 80501135040. Its totient is φ = 16771069680.

The previous prime is 43045745641. The next prime is 43045745669. The reversal of 43045745666 is 66654754034.

It is not an unprimeable number, because it can be changed into a prime (43045745669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139758761 + ... + 139759068.

It is an arithmetic number, because the mean of its divisors is an integer number (5031320940).

Almost surely, 2^43045745666 is an apocalyptic number.

43045745666 is a deficient number, since it is larger than the sum of its proper divisors (37455389374).

43045745666 is a wasteful number, since it uses less digits than its factorization.

43045745666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279517849.

The product of its (nonzero) digits is 7257600, while the sum is 50.

The spelling of 43045745666 in words is "forty-three billion, forty-five million, seven hundred forty-five thousand, six hundred sixty-six".