491500548000 has 2016 divisors, whose sum is σ = 2285898451200. Its totient is φ = 101616768000.

The previous prime is 491500547977. The next prime is 491500548037. The reversal of 491500548000 is 845005194.

It is a tau number, because it is divible by the number of its divisors (2016).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 2469851901 + ... + 2469852099.

It is an arithmetic number, because the mean of its divisors is an integer number (1133878200).

Almost surely, 2^491500548000 is an apocalyptic number.

491500548000 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 491500548000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1142949225600).

491500548000 is an abundant number, since it is smaller than the sum of its proper divisors (1794397903200).

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

491500548000 is a wasteful number, since it uses less digits than its factorization.

491500548000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 491500548000 in words is "four hundred ninety-one billion, five hundred million, five hundred forty-eight thousand".