6559873544 has 128 divisors (see below), whose sum is σ = 15102720000. Its totient is φ = 2610800640.

The previous prime is 6559873501. The next prime is 6559873577. The reversal of 6559873544 is 4453789556.

It is a super-2 number, since 2×6559873544² = 86063881826542239872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 6559873544.

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, 11528492 + ... + 11529060.

It is an arithmetic number, because the mean of its divisors is an integer number (117990000).

Almost surely, 2^6559873544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6559873544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7551360000).

6559873544 is an abundant number, since it is smaller than the sum of its proper divisors (8542846456).

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

6559873544 is a wasteful number, since it uses less digits than its factorization.

6559873544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871 (or 867 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 56.

The square root of 6559873544 is about 80993.0462694175. The cubic root of 6559873544 is about 1871.9682959359.

The spelling of 6559873544 in words is "six billion, five hundred fifty-nine million, eight hundred seventy-three thousand, five hundred forty-four".