538178273280 has 960 divisors, whose sum is σ = 2038369536000. Its totient is φ = 134432686080.

The previous prime is 538178273267. The next prime is 538178273329. The reversal of 538178273280 is 82372871835.

538178273280 is a `hidden beast` number, since 538 + 1 + 7 + 8 + 27 + 3 + 2 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3611934646 + ... + 3611934794.

It is an arithmetic number, because the mean of its divisors is an integer number (2123301600).

Almost surely, 2^538178273280 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 538178273280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1019184768000).

538178273280 is an abundant number, since it is smaller than the sum of its proper divisors (1500191262720).

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

538178273280 is a wasteful number, since it uses less digits than its factorization.

538178273280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 538178273280 in words is "five hundred thirty-eight billion, one hundred seventy-eight million, two hundred seventy-three thousand, two hundred eighty".