581720439048 has 64 divisors (see below), whose sum is σ = 1662536171520. Its totient is φ = 166158062400.

The previous prime is 581720439017. The next prime is 581720439049. The reversal of 581720439048 is 840934027185.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (581720439049) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 90553 + ... + 1082423.

It is an arithmetic number, because the mean of its divisors is an integer number (25977127680).

Almost surely, 2^581720439048 is an apocalyptic number.

It is an amenable number.

581720439048 is an abundant number, since it is smaller than the sum of its proper divisors (1080815732472).

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

581720439048 is a wasteful number, since it uses less digits than its factorization.

581720439048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995378 (or 995374 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 581720439048 in words is "five hundred eighty-one billion, seven hundred twenty million, four hundred thirty-nine thousand, forty-eight".