491152318200 has 192 divisors, whose sum is σ = 1699203744000. Its totient is φ = 130396648320.

The previous prime is 491152318183. The next prime is 491152318211. The reversal of 491152318200 is 2813251194.

491152318200 is a `hidden beast` number, since 4 + 91 + 1 + 52 + 318 + 200 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1025461 + ... + 1426139.

It is an arithmetic number, because the mean of its divisors is an integer number (8850019500).

Almost surely, 2^491152318200 is an apocalyptic number.

491152318200 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 491152318200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (849601872000).

491152318200 is an abundant number, since it is smaller than the sum of its proper divisors (1208051425800).

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

491152318200 is a wasteful number, since it uses less digits than its factorization.

491152318200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400931 (or 400916 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

Adding to 491152318200 its reverse (2813251194), we get a palindrome (493965569394).

The spelling of 491152318200 in words is "four hundred ninety-one billion, one hundred fifty-two million, three hundred eighteen thousand, two hundred".