581579476340 has 96 divisors (see below), whose sum is σ = 1247121308160. Its totient is φ = 227751422976.

The previous prime is 581579476319. The next prime is 581579476403. The reversal of 581579476340 is 43674975185.

581579476340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a self number, because there is not a number n which added to its sum of digits gives 581579476340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520661462 + ... + 520662578.

It is an arithmetic number, because the mean of its divisors is an integer number (12990846960).

Almost surely, 2^581579476340 is an apocalyptic number.

It is an amenable number.

581579476340 is an abundant number, since it is smaller than the sum of its proper divisors (665541831820).

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

581579476340 is a wasteful number, since it uses less digits than its factorization.

581579476340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601 (or 2599 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 59.

The spelling of 581579476340 in words is "five hundred eighty-one billion, five hundred seventy-nine million, four hundred seventy-six thousand, three hundred forty".