40666939903008 has 144 divisors (see below), whose sum is σ = 115965613764000. Its totient is φ = 13518275097600.

The previous prime is 40666939903003. The next prime is 40666939903019. The reversal of 40666939903008 is 80030993966604.

It is a tau number, because it is divible by the number of its divisors (144).

It is not an unprimeable number, because it can be changed into a prime (40666939903003) 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 23 ways as a sum of consecutive naturals, for example, 388543483 + ... + 388648133.

It is an arithmetic number, because the mean of its divisors is an integer number (805316762250).

Almost surely, 2^{40666939903008} is an apocalyptic number.

40666939903008 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40666939903008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57982806882000).

40666939903008 is an abundant number, since it is smaller than the sum of its proper divisors (75298673860992).

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

40666939903008 is a wasteful number, since it uses less digits than its factorization.

40666939903008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108375 (or 108364 counting only the distinct ones).

The product of its (nonzero) digits is 45349632, while the sum is 63.

The spelling of 40666939903008 in words is "forty trillion, six hundred sixty-six billion, nine hundred thirty-nine million, nine hundred three thousand, eight".