40894320668 has 24 divisors (see below), whose sum is σ = 73322761680. Its totient is φ = 19949271680.

The previous prime is 40894320653. The next prime is 40894320671. The reversal of 40894320668 is 86602349804.

It is a happy number.

It is a congruent number.

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, 500873 + ... + 576768.

It is an arithmetic number, because the mean of its divisors is an integer number (3055115070).

Almost surely, 2^40894320668 is an apocalyptic number.

It is an amenable number.

40894320668 is a deficient number, since it is larger than the sum of its proper divisors (32428441012).

40894320668 is a wasteful number, since it uses less digits than its factorization.

40894320668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077877 (or 1077875 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 40894320668 in words is "forty billion, eight hundred ninety-four million, three hundred twenty thousand, six hundred sixty-eight".