581391359980 has 12 divisors (see below), whose sum is σ = 1220921856000. Its totient is φ = 232556543984.

The previous prime is 581391359947. The next prime is 581391359987. The reversal of 581391359980 is 89953193185.

It is not an unprimeable number, because it can be changed into a prime (581391359987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14534783980 + ... + 14534784019.

It is an arithmetic number, because the mean of its divisors is an integer number (101743488000).

Almost surely, 2^581391359980 is an apocalyptic number.

It is an amenable number.

581391359980 is an abundant number, since it is smaller than the sum of its proper divisors (639530496020).

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

581391359980 is a wasteful number, since it uses less digits than its factorization.

581391359980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29069568008 (or 29069568006 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 61.

The spelling of 581391359980 in words is "five hundred eighty-one billion, three hundred ninety-one million, three hundred fifty-nine thousand, nine hundred eighty".