4416660640665 has 192 divisors, whose sum is σ = 9662422049280. Its totient is φ = 1816408903680.

The previous prime is 4416660640627. The next prime is 4416660640709. The reversal of 4416660640665 is 5660460666144.

It is not a de Polignac number, because 4416660640665 - 2⁹ = 4416660640153 is a prime.

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 191 ways as a sum of consecutive naturals, for example, 81147981 + ... + 81202389.

It is an arithmetic number, because the mean of its divisors is an integer number (50325114840).

Almost surely, 2^{4416660640665} is an apocalyptic number.

4416660640665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4416660640665 is an abundant number, since it is smaller than the sum of its proper divisors (5245761408615).

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

4416660640665 is a wasteful number, since it uses less digits than its factorization.

4416660640665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54944 (or 54941 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 54.

The spelling of 4416660640665 in words is "four trillion, four hundred sixteen billion, six hundred sixty million, six hundred forty thousand, six hundred sixty-five".