671067542400 has 192 divisors, whose sum is σ = 2213227354800. Its totient is φ = 178716672000.

The previous prime is 671067542377. The next prime is 671067542413. The reversal of 671067542400 is 4245760176.

It is a tau number, because it is divible by the number of its divisors (192).

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 23 ways as a sum of consecutive naturals, for example, 7336950 + ... + 7427850.

Almost surely, 2^671067542400 is an apocalyptic number.

671067542400 is a gapful number since it is divisible by the number (60) 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 671067542400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1106613677400).

671067542400 is an abundant number, since it is smaller than the sum of its proper divisors (1542159812400).

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

671067542400 is a wasteful number, since it uses less digits than its factorization.

671067542400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91697 (or 91680 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 671067542400 in words is "six hundred seventy-one billion, sixty-seven million, five hundred forty-two thousand, four hundred".