491945381176 has 16 divisors (see below), whose sum is σ = 922472906040. Its totient is φ = 245952606240.

The previous prime is 491945381159. The next prime is 491945381203. The reversal of 491945381176 is 671183549194.

It is a self number, because there is not a number n which added to its sum of digits gives 491945381176.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2406190 + ... + 2602621.

Almost surely, 2^491945381176 is an apocalyptic number.

It is an amenable number.

491945381176 is a deficient number, since it is larger than the sum of its proper divisors (430527524864).

491945381176 is a wasteful number, since it uses less digits than its factorization.

491945381176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5021094 (or 5021090 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 58.

The spelling of 491945381176 in words is "four hundred ninety-one billion, nine hundred forty-five million, three hundred eighty-one thousand, one hundred seventy-six".