40014665666 has 16 divisors (see below), whose sum is σ = 60592147200. Its totient is φ = 19817340240.

The previous prime is 40014665659. The next prime is 40014665689. The reversal of 40014665666 is 66656641004.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2216396 + ... + 2234376.

It is an arithmetic number, because the mean of its divisors is an integer number (3787009200).

Almost surely, 2^40014665666 is an apocalyptic number.

40014665666 is a deficient number, since it is larger than the sum of its proper divisors (20577481534).

40014665666 is a wasteful number, since it uses less digits than its factorization.

40014665666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28489.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 40014665666 in words is "forty billion, fourteen million, six hundred sixty-five thousand, six hundred sixty-six".