489509766720 has 448 divisors, whose sum is σ = 1969121629440. Its totient is φ = 113406345216.

The previous prime is 489509766677. The next prime is 489509766743. The reversal of 489509766720 is 27667905984.

489509766720 is a `hidden beast` number, since 48 + 9 + 509 + 7 + 6 + 67 + 20 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1781259 + ... + 2037621.

It is an arithmetic number, because the mean of its divisors is an integer number (4395360780).

Almost surely, 2^489509766720 is an apocalyptic number.

489509766720 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 489509766720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984560814720).

489509766720 is an abundant number, since it is smaller than the sum of its proper divisors (1479611862720).

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

489509766720 is a wasteful number, since it uses less digits than its factorization.

489509766720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256419 (or 256403 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 489509766720 in words is "four hundred eighty-nine billion, five hundred nine million, seven hundred sixty-six thousand, seven hundred twenty".