491741044480 has 288 divisors, whose sum is σ = 1376212118400. Its totient is φ = 168278261760.

The previous prime is 491741044477. The next prime is 491741044507. The reversal of 491741044480 is 84440147194.

It is a self number, because there is not a number n which added to its sum of digits gives 491741044480.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 448259292 + ... + 448260388.

It is an arithmetic number, because the mean of its divisors is an integer number (4778514300).

Almost surely, 2^491741044480 is an apocalyptic number.

491741044480 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 491741044480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688106059200).

491741044480 is an abundant number, since it is smaller than the sum of its proper divisors (884471073920).

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

491741044480 is a wasteful number, since it uses less digits than its factorization.

491741044480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160 (or 2132 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 491741044480 in words is "four hundred ninety-one billion, seven hundred forty-one million, forty-four thousand, four hundred eighty".