491797631592000 has 896 divisors, whose sum is σ = 1829731788718080. Its totient is φ = 129313971763200.

The previous prime is 491797631591999. The next prime is 491797631592041. The reversal of 491797631592000 is 295136797194.

491797631592000 is a `hidden beast` number, since 4 + 9 + 1 + 7 + 9 + 7 + 6 + 31 + 592 + 0 + 0 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4471361007 + ... + 4471470993.

Almost surely, 2^{491797631592000} is an apocalyptic number.

491797631592000 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 491797631592000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (914865894359040).

491797631592000 is an abundant number, since it is smaller than the sum of its proper divisors (1337934157126080).

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

491797631592000 is a wasteful number, since it uses less digits than its factorization.

491797631592000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110313 (or 110287 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 63.

The spelling of 491797631592000 in words is "four hundred ninety-one trillion, seven hundred ninety-seven billion, six hundred thirty-one million, five hundred ninety-two thousand".