489306844656 has 320 divisors, whose sum is σ = 1789006924800. Its totient is φ = 124652888064.

The previous prime is 489306844597. The next prime is 489306844669. The reversal of 489306844656 is 656448603984.

489306844656 is a `hidden beast` number, since 4 + 8 + 93 + 0 + 6 + 84 + 465 + 6 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 489306844593 and 489306844602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 726276 + ... + 1227228.

It is an arithmetic number, because the mean of its divisors is an integer number (5590646640).

Almost surely, 2^489306844656 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 489306844656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (894503462400).

489306844656 is an abundant number, since it is smaller than the sum of its proper divisors (1299700080144).

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

489306844656 is a wasteful number, since it uses less digits than its factorization.

489306844656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501013 (or 501001 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 63.

The spelling of 489306844656 in words is "four hundred eighty-nine billion, three hundred six million, eight hundred forty-four thousand, six hundred fifty-six".