491599342080 has 1680 divisors, whose sum is σ = 2227118205312. Its totient is φ = 101822054400.

The previous prime is 491599342033. The next prime is 491599342111. The reversal of 491599342080 is 80243995194.

491599342080 is a `hidden beast` number, since 4 + 9 + 1 + 59 + 93 + 420 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1680).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 1580705125 + ... + 1580705435.

Almost surely, 2^491599342080 is an apocalyptic number.

491599342080 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 491599342080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1113559102656).

491599342080 is an abundant number, since it is smaller than the sum of its proper divisors (1735518863232).

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

491599342080 is an equidigital number, since it uses as much as digits as its factorization.

491599342080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 491599342080 in words is "four hundred ninety-one billion, five hundred ninety-nine million, three hundred forty-two thousand, eighty".