494381489666 has 24 divisors (see below), whose sum is σ = 787898494656. Its totient is φ = 232609248320.

The previous prime is 494381489627. The next prime is 494381489699. The reversal of 494381489666 is 666984183494.

It is a junction number, because it is equal to n+sod(n) for n = 494381489596 and 494381489605.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3353651 + ... + 3497961.

It is an arithmetic number, because the mean of its divisors is an integer number (32829103944).

Almost surely, 2^494381489666 is an apocalyptic number.

494381489666 is a deficient number, since it is larger than the sum of its proper divisors (293517004990).

494381489666 is a wasteful number, since it uses less digits than its factorization.

494381489666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150274 (or 150257 counting only the distinct ones).

The product of its digits is 214990848, while the sum is 68.

The spelling of 494381489666 in words is "four hundred ninety-four billion, three hundred eighty-one million, four hundred eighty-nine thousand, six hundred sixty-six".