581957632660 has 144 divisors (see below), whose sum is σ = 1295782064640. Its totient is φ = 219462739200.

The previous prime is 581957632649. The next prime is 581957632699. The reversal of 581957632660 is 66236759185.

It is a super-2 number, since 2×581957632660² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 581957632595 and 581957632604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125446621 + ... + 125451259.

It is an arithmetic number, because the mean of its divisors is an integer number (8998486560).

Almost surely, 2^581957632660 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 581957632660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (647891032320).

581957632660 is an abundant number, since it is smaller than the sum of its proper divisors (713824431980).

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

581957632660 is a wasteful number, since it uses less digits than its factorization.

581957632660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878 (or 4845 counting only the distinct ones).

The product of its (nonzero) digits is 16329600, while the sum is 58.

The spelling of 581957632660 in words is "five hundred eighty-one billion, nine hundred fifty-seven million, six hundred thirty-two thousand, six hundred sixty".