489476528640 has 1280 divisors, whose sum is σ = 2062839398400. Its totient is φ = 108689817600.

The previous prime is 489476528581. The next prime is 489476528657. The reversal of 489476528640 is 46825674984.

489476528640 is a `hidden beast` number, since 4 + 8 + 9 + 47 + 6 + 528 + 64 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1280).

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 127 ways as a sum of consecutive naturals, for example, 447827934 + ... + 447829026.

It is an arithmetic number, because the mean of its divisors is an integer number (1611593280).

Almost surely, 2^489476528640 is an apocalyptic number.

489476528640 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 489476528640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031419699200).

489476528640 is an abundant number, since it is smaller than the sum of its proper divisors (1573362869760).

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

489476528640 is a wasteful number, since it uses less digits than its factorization.

489476528640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186 (or 1164 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 63.

The spelling of 489476528640 in words is "four hundred eighty-nine billion, four hundred seventy-six million, five hundred twenty-eight thousand, six hundred forty".