5321256768 has 196 divisors, whose sum is σ = 16765592580. Its totient is φ = 1669165056.

The previous prime is 5321256691. The next prime is 5321256769. The reversal of 5321256768 is 8676521235.

5321256768 is a `hidden beast` number, since 5 + 3 + 21 + 2 + 567 + 68 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3843008064 + 1478248704 = 61992^2 + 38448^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5321256769) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 789798 + ... + 796506.

Almost surely, 2^5321256768 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 5321256768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8382796290).

5321256768 is an abundant number, since it is smaller than the sum of its proper divisors (11444335812).

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

5321256768 is an equidigital number, since it uses as much as digits as its factorization.

5321256768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6756 (or 6731 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 5321256768 is about 72946.9448846215. The cubic root of 5321256768 is about 1745.8412014149.

The spelling of 5321256768 in words is "five billion, three hundred twenty-one million, two hundred fifty-six thousand, seven hundred sixty-eight".