168313489444 has 12 divisors (see below), whose sum is σ = 297408302464. Its totient is φ = 83339688744.

The previous prime is 168313489387. The next prime is 168313489459. The reversal of 168313489444 is 444984313861.

It is a happy number.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204263532 + ... + 204264355.

Almost surely, 2^168313489444 is an apocalyptic number.

It is an amenable number.

168313489444 is a deficient number, since it is larger than the sum of its proper divisors (129094813020).

168313489444 is a wasteful number, since it uses less digits than its factorization.

168313489444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408527994 (or 408527992 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 55.

The spelling of 168313489444 in words is "one hundred sixty-eight billion, three hundred thirteen million, four hundred eighty-nine thousand, four hundred forty-four".