491459996160 has 1440 divisors, whose sum is σ = 2145613421952. Its totient is φ = 107296358400.

The previous prime is 491459996107. The next prime is 491459996177. The reversal of 491459996160 is 61699954194.

491459996160 is a `hidden beast` number, since 4 + 9 + 1 + 4 + 5 + 9 + 9 + 9 + 616 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 701083810 + ... + 701084510.

Almost surely, 2^491459996160 is an apocalyptic number.

491459996160 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 491459996160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072806710976).

491459996160 is an abundant number, since it is smaller than the sum of its proper divisors (1654153425792).

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

491459996160 is an equidigital number, since it uses as much as digits as its factorization.

491459996160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 18895680, while the sum is 63.

The spelling of 491459996160 in words is "four hundred ninety-one billion, four hundred fifty-nine million, nine hundred ninety-six thousand, one hundred sixty".