491481043200 has 2160 divisors, whose sum is σ = 2278768149504. Its totient is φ = 101921587200.

The previous prime is 491481043103. The next prime is 491481043267. The reversal of 491481043200 is 2340184194.

It is a happy number.

491481043200 is a `hidden beast` number, since 491 + 48 + 104 + 3 + 20 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2160).

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

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1912377472 + ... + 1912377728.

Almost surely, 2^491481043200 is an apocalyptic number.

491481043200 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 491481043200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1139384074752).

491481043200 is an abundant number, since it is smaller than the sum of its proper divisors (1787287106304).

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

491481043200 is a wasteful number, since it uses less digits than its factorization.

491481043200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 491481043200 in words is "four hundred ninety-one billion, four hundred eighty-one million, forty-three thousand, two hundred".