581697047680 has 256 divisors, whose sum is σ = 1623978720000. Its totient is φ = 199160586240.

The previous prime is 581697047651. The next prime is 581697047689. The reversal of 581697047680 is 86740796185.

It is not an unprimeable number, because it can be changed into a prime (581697047689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213152556 + ... + 213155284.

It is an arithmetic number, because the mean of its divisors is an integer number (6343666875).

Almost surely, 2^581697047680 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 581697047680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (811989360000).

581697047680 is an abundant number, since it is smaller than the sum of its proper divisors (1042281672320).

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

581697047680 is an equidigital number, since it uses as much as digits as its factorization.

581697047680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740 (or 3714 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 61.

The spelling of 581697047680 in words is "five hundred eighty-one billion, six hundred ninety-seven million, forty-seven thousand, six hundred eighty".