489681866016 has 576 divisors, whose sum is σ = 1752336488448. Its totient is φ = 131314618368.

The previous prime is 489681865997. The next prime is 489681866119. The reversal of 489681866016 is 610668186984.

489681866016 is a `hidden beast` number, since 4 + 8 + 9 + 6 + 8 + 18 + 6 + 601 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 594995781 + ... + 594996603.

It is an arithmetic number, because the mean of its divisors is an integer number (3042250848).

Almost surely, 2^489681866016 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 489681866016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876168244224).

489681866016 is an abundant number, since it is smaller than the sum of its proper divisors (1262654622432).

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

489681866016 is a wasteful number, since it uses less digits than its factorization.

489681866016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515 (or 1495 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 63.

The spelling of 489681866016 in words is "four hundred eighty-nine billion, six hundred eighty-one million, eight hundred sixty-six thousand, sixteen".