491324304960 has 392 divisors, whose sum is σ = 1763490479616. Its totient is φ = 130322027520.

The previous prime is 491324304959. The next prime is 491324304971. The reversal of 491324304960 is 69403423194.

491324304960 is a `hidden beast` number, since 4 + 91 + 32 + 43 + 0 + 496 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 55 ways as a sum of consecutive naturals, for example, 44550967 + ... + 44561993.

Almost surely, 2^491324304960 is an apocalyptic number.

491324304960 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 491324304960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881745239808).

491324304960 is an abundant number, since it is smaller than the sum of its proper divisors (1272166174656).

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

491324304960 is a wasteful number, since it uses less digits than its factorization.

491324304960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11253 (or 11228 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 491324304960 in words is "four hundred ninety-one billion, three hundred twenty-four million, three hundred four thousand, nine hundred sixty".