65044032666 has 8 divisors (see below), whose sum is σ = 130088065344. Its totient is φ = 21681344220.

The previous prime is 65044032617. The next prime is 65044032709. The reversal of 65044032666 is 66623044056.

It is a sphenic number, since it is the product of 3 distinct primes.

65044032666 is an admirable number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5420336050 + ... + 5420336061.

It is an arithmetic number, because the mean of its divisors is an integer number (16261008168).

Almost surely, 2^65044032666 is an apocalyptic number.

65044032666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65044032666 is a wasteful number, since it uses less digits than its factorization.

65044032666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10840672116.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 65044032666 in words is "sixty-five billion, forty-four million, thirty-two thousand, six hundred sixty-six".