671223324800 has 216 divisors, whose sum is σ = 1929779406135. Its totient is φ = 230022481920.

The previous prime is 671223324787. The next prime is 671223324833. The reversal of 671223324800 is 8423322176.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 46073763904 + 625149560896 = 214648^2 + 790664^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=579320.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 324418166 + ... + 324420234.

Almost surely, 2^671223324800 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671223324800

671223324800 is an abundant number, since it is smaller than the sum of its proper divisors (1258556081335).

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

671223324800 is an frugal number, since it uses more digits than its factorization.

671223324800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4176 (or 2083 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

Adding to 671223324800 its reverse (8423322176), we get a palindrome (679646646976).

The spelling of 671223324800 in words is "six hundred seventy-one billion, two hundred twenty-three million, three hundred twenty-four thousand, eight hundred".