538278253481472 has 640 divisors, whose sum is σ = 1750408606679040. Its totient is φ = 143727698903040.

The previous prime is 538278253481401. The next prime is 538278253481489. The reversal of 538278253481472 is 274184352872835.

It is a junction number, because it is equal to n+sod(n) for n = 538278253481397 and 538278253481406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1623418488 + ... + 1623750024.

It is an arithmetic number, because the mean of its divisors is an integer number (2735013447936).

Almost surely, 2^{538278253481472} 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 538278253481472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (875204303339520).

538278253481472 is an abundant number, since it is smaller than the sum of its proper divisors (1212130353197568).

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

538278253481472 is a wasteful number, since it uses less digits than its factorization.

538278253481472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331762 (or 331746 counting only the distinct ones).

The product of its digits is 722534400, while the sum is 69.

The spelling of 538278253481472 in words is "five hundred thirty-eight trillion, two hundred seventy-eight billion, two hundred fifty-three million, four hundred eighty-one thousand, four hundred seventy-two".