489388720128 has 480 divisors, whose sum is σ = 1637943164928. Its totient is φ = 126261657600.

The previous prime is 489388720123. The next prime is 489388720133. The reversal of 489388720128 is 821027883984.

It is an interprime number because it is at equal distance from previous prime (489388720123) and next prime (489388720133).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489388720123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 722878126 + ... + 722878802.

Almost surely, 2^489388720128 is an apocalyptic number.

489388720128 is a gapful number since it is divisible by the number (48) 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 489388720128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (818971582464).

489388720128 is an abundant number, since it is smaller than the sum of its proper divisors (1148554444800).

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

489388720128 is a wasteful number, since it uses less digits than its factorization.

489388720128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917 (or 891 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 60.

The spelling of 489388720128 in words is "four hundred eighty-nine billion, three hundred eighty-eight million, seven hundred twenty thousand, one hundred twenty-eight".