6559786992 has 160 divisors (see below), whose sum is σ = 19491323904. Its totient is φ = 1882540800.

The previous prime is 6559786949. The next prime is 6559786999. The reversal of 6559786992 is 2996879556.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6559786999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 765033 + ... + 773559.

Almost surely, 2^6559786992 is an apocalyptic number.

6559786992 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6559786992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9745661952).

6559786992 is an abundant number, since it is smaller than the sum of its proper divisors (12931536912).

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

6559786992 is a wasteful number, since it uses less digits than its factorization.

6559786992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8627 (or 8621 counting only the distinct ones).

The product of its digits is 73483200, while the sum is 66.

The square root of 6559786992 is about 80992.5119501797. The cubic root of 6559786992 is about 1871.9600628853.

The spelling of 6559786992 in words is "six billion, five hundred fifty-nine million, seven hundred eighty-six thousand, nine hundred ninety-two".