489611632640 has 224 divisors, whose sum is σ = 1269089304336. Its totient is φ = 180250214400.

The previous prime is 489611632633. The next prime is 489611632661. The reversal of 489611632640 is 46236116984.

It can be written as a sum of positive squares in 8 ways, for example, as 229234118656 + 260377513984 = 478784^2 + 510272^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213523334 + ... + 213525626.

Almost surely, 2^489611632640 is an apocalyptic number.

489611632640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489611632640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634544652168).

489611632640 is an abundant number, since it is smaller than the sum of its proper divisors (779477671696).

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

489611632640 is a wasteful number, since it uses less digits than its factorization.

489611632640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738 (or 2714 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 50.

The spelling of 489611632640 in words is "four hundred eighty-nine billion, six hundred eleven million, six hundred thirty-two thousand, six hundred forty".