538261958256 has 300 divisors, whose sum is σ = 1582466606280. Its totient is φ = 157650028800.

The previous prime is 538261958233. The next prime is 538261958263. The reversal of 538261958256 is 652859162835.

It is a self number, because there is not a number n which added to its sum of digits gives 538261958256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 675359650 + ... + 675360446.

Almost surely, 2^538261958256 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 538261958256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (791233303140).

538261958256 is an abundant number, since it is smaller than the sum of its proper divisors (1044204648024).

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

538261958256 is an equidigital number, since it uses as much as digits as its factorization.

538261958256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 844 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 60.

The spelling of 538261958256 in words is "five hundred thirty-eight billion, two hundred sixty-one million, nine hundred fifty-eight thousand, two hundred fifty-six".