491454597600 has 864 divisors, whose sum is σ = 1861584850944. Its totient is φ = 121712025600.

The previous prime is 491454597583. The next prime is 491454597659. The reversal of 491454597600 is 6795454194.

491454597600 is a `hidden beast` number, since 4 + 9 + 1 + 4 + 545 + 97 + 6 + 0 + 0 = 666.

It is a congruent number.

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 143 ways as a sum of consecutive naturals, for example, 1813485465 + ... + 1813485735.

It is an arithmetic number, because the mean of its divisors is an integer number (2154612096).

Almost surely, 2^491454597600 is an apocalyptic number.

491454597600 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 491454597600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (930792425472).

491454597600 is an abundant number, since it is smaller than the sum of its proper divisors (1370130253344).

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

491454597600 is a wasteful number, since it uses less digits than its factorization.

491454597600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 491454597600 in words is "four hundred ninety-one billion, four hundred fifty-four million, five hundred ninety-seven thousand, six hundred".