5821581568 has 72 divisors (see below), whose sum is σ = 13114140480. Its totient is φ = 2554890240.

The previous prime is 5821581553. The next prime is 5821581583. The reversal of 5821581568 is 8651851285.

It is an interprime number because it is at equal distance from previous prime (5821581553) and next prime (5821581583).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46021 + ... + 117307.

It is an arithmetic number, because the mean of its divisors is an integer number (182140840).

Almost surely, 2^5821581568 is an apocalyptic number.

5821581568 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5821581568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6557070240).

5821581568 is an abundant number, since it is smaller than the sum of its proper divisors (7292558912).

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

5821581568 is a wasteful number, since it uses less digits than its factorization.

5821581568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71343 (or 71329 counting only the distinct ones).

The product of its digits is 768000, while the sum is 49.

The square root of 5821581568 is about 76299.2894331264. The cubic root of 5821581568 is about 1798.9275059587.

The spelling of 5821581568 in words is "five billion, eight hundred twenty-one million, five hundred eighty-one thousand, five hundred sixty-eight".