491411008000 has 960 divisors, whose sum is σ = 1467086100480. Its totient is φ = 163553280000.

The previous prime is 491411007947. The next prime is 491411008003. The reversal of 491411008000 is 800114194.

It is a self number, because there is not a number n which added to its sum of digits gives 491411008000.

It is not an unprimeable number, because it can be changed into a prime (491411008003) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5521471956 + ... + 5521472044.

It is an arithmetic number, because the mean of its divisors is an integer number (1528214688).

Almost surely, 2^491411008000 is an apocalyptic number.

491411008000 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 491411008000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (733543050240).

491411008000 is an abundant number, since it is smaller than the sum of its proper divisors (975675092480).

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

491411008000 is a wasteful number, since it uses less digits than its factorization.

491411008000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 491411008000 in words is "four hundred ninety-one billion, four hundred eleven million, eight thousand".