581487188660 has 24 divisors (see below), whose sum is σ = 1395569253120. Its totient is φ = 199367036064.

The previous prime is 581487188651. The next prime is 581487188693. The reversal of 581487188660 is 66881784185.

581487188660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 581487188593 and 581487188602.

It is a congruent number.

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, 2076739820 + ... + 2076740099.

It is an arithmetic number, because the mean of its divisors is an integer number (58148718880).

Almost surely, 2^581487188660 is an apocalyptic number.

It is an amenable number.

581487188660 is an abundant number, since it is smaller than the sum of its proper divisors (814082064460).

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

581487188660 is a wasteful number, since it uses less digits than its factorization.

581487188660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4153479935 (or 4153479933 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 62.

The spelling of 581487188660 in words is "five hundred eighty-one billion, four hundred eighty-seven million, one hundred eighty-eight thousand, six hundred sixty".