65443730865 has 16 divisors (see below), whose sum is σ = 105294945600. Its totient is φ = 34708331072.

The previous prime is 65443730861. The next prime is 65443730899. The reversal of 65443730865 is 56803734456.

It is a cyclic number.

It is not a de Polignac number, because 65443730865 - 2² = 65443730861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65443730861) 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 15 ways as a sum of consecutive naturals, for example, 12184230 + ... + 12189599.

It is an arithmetic number, because the mean of its divisors is an integer number (6580934100).

Almost surely, 2^65443730865 is an apocalyptic number.

It is an amenable number.

65443730865 is a deficient number, since it is larger than the sum of its proper divisors (39851214735).

65443730865 is a wasteful number, since it uses less digits than its factorization.

65443730865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24374016.

The product of its (nonzero) digits is 7257600, while the sum is 51.

The spelling of 65443730865 in words is "sixty-five billion, four hundred forty-three million, seven hundred thirty thousand, eight hundred sixty-five".