494421079688 has 16 divisors (see below), whose sum is σ = 927393801180. Its totient is φ = 247116066048.

The previous prime is 494421079687. The next prime is 494421079717. The reversal of 494421079688 is 886970124494.

It can be written as a sum of positive squares in 2 ways, for example, as 492806808004 + 1614271684 = 702002^2 + 40178^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 494421079688.

It is not an unprimeable number, because it can be changed into a prime (494421079687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11786981 + ... + 11828852.

Almost surely, 2^494421079688 is an apocalyptic number.

It is an amenable number.

494421079688 is a deficient number, since it is larger than the sum of its proper divisors (432972721492).

494421079688 is a wasteful number, since it uses less digits than its factorization.

494421079688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23618456 (or 23618452 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 62.

The spelling of 494421079688 in words is "four hundred ninety-four billion, four hundred twenty-one million, seventy-nine thousand, six hundred eighty-eight".