8558581679920 has 20 divisors (see below), whose sum is σ = 19898702406000. Its totient is φ = 3423432671936.

The previous prime is 8558581679903. The next prime is 8558581679933. The reversal of 8558581679920 is 299761858558.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53491135420 + ... + 53491135579.

It is an arithmetic number, because the mean of its divisors is an integer number (994935120300).

Almost surely, 2^{8558581679920} is an apocalyptic number.

8558581679920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8558581679920 is an abundant number, since it is smaller than the sum of its proper divisors (11340120726080).

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

8558581679920 is a wasteful number, since it uses less digits than its factorization.

8558581679920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106982271012 (or 106982271006 counting only the distinct ones).

The product of its (nonzero) digits is 435456000, while the sum is 73.

The spelling of 8558581679920 in words is "eight trillion, five hundred fifty-eight billion, five hundred eighty-one million, six hundred seventy-nine thousand, nine hundred twenty".