40305660666000 has 80 divisors (see below), whose sum is σ = 129945450006528. Its totient is φ = 10748176176000.

The previous prime is 40305660665993. The next prime is 40305660666071. The reversal of 40305660666000 is 66606650304.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3358799056 + ... + 3358811055.

Almost surely, 2^{40305660666000} is an apocalyptic number.

40305660666000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40305660666000 is an abundant number, since it is smaller than the sum of its proper divisors (89639789340528).

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

40305660666000 is a wasteful number, since it uses less digits than its factorization.

40305660666000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6717610137 (or 6717610121 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 40305660666000 in words is "forty trillion, three hundred five billion, six hundred sixty million, six hundred sixty-six thousand".