494784431856 has 600 divisors, whose sum is σ = 1706698698320. Its totient is φ = 137459773440.

The previous prime is 494784431837. The next prime is 494784431887. The reversal of 494784431856 is 658134487494.

494784431856 is a `hidden beast` number, since 4 + 9 + 4 + 7 + 8 + 443 + 185 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 494784431793 and 494784431802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 332292360 + ... + 332293848.

Almost surely, 2^494784431856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 494784431856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (853349349160).

494784431856 is an abundant number, since it is smaller than the sum of its proper divisors (1211914266464).

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

494784431856 is a wasteful number, since it uses less digits than its factorization.

494784431856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707 (or 1681 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 63.

The spelling of 494784431856 in words is "four hundred ninety-four billion, seven hundred eighty-four million, four hundred thirty-one thousand, eight hundred fifty-six".