543406666720 has 192 divisors, whose sum is σ = 1369925222400. Its totient is φ = 203114096640.

The previous prime is 543406666687. The next prime is 543406666721. The reversal of 543406666720 is 27666604345.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543406666721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66337825 + ... + 66346015.

It is an arithmetic number, because the mean of its divisors is an integer number (7135027200).

Almost surely, 2^543406666720 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 543406666720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684962611200).

543406666720 is an abundant number, since it is smaller than the sum of its proper divisors (826518555680).

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

543406666720 is a wasteful number, since it uses less digits than its factorization.

543406666720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8521 (or 8513 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 49.

The spelling of 543406666720 in words is "five hundred forty-three billion, four hundred six million, six hundred sixty-six thousand, seven hundred twenty".