494023568868 has 18 divisors (see below), whose sum is σ = 1248781799174. Its totient is φ = 164674522944.

The previous prime is 494023568813. The next prime is 494023568879. The reversal of 494023568868 is 868865320494.

494023568868 is a `hidden beast` number, since 4 + 9 + 4 + 0 + 2 + 3 + 568 + 8 + 68 = 666.

It can be written as a sum of positive squares in only one way, i.e., 493882861824 + 140707044 = 702768^2 + 11862^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 6861438421 + ... + 6861438492.

Almost surely, 2^494023568868 is an apocalyptic number.

It is an amenable number.

494023568868 is an abundant number, since it is smaller than the sum of its proper divisors (754758230306).

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

494023568868 is a wasteful number, since it uses less digits than its factorization.

494023568868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13722876923 (or 13722876918 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 63.

The spelling of 494023568868 in words is "four hundred ninety-four billion, twenty-three million, five hundred sixty-eight thousand, eight hundred sixty-eight".