6605520000 has 320 divisors, whose sum is σ = 23229439200. Its totient is φ = 1656832000.

The previous prime is 6605519971. The next prime is 6605520007. The reversal of 6605520000 is 255066.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (6605520007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4079191 + ... + 4080809.

Almost surely, 2^6605520000 is an apocalyptic number.

6605520000 is a gapful number since it is divisible by the number (60) 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 6605520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11614719600).

6605520000 is an abundant number, since it is smaller than the sum of its proper divisors (16623919200).

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

6605520000 is a wasteful number, since it uses less digits than its factorization.

6605520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673 (or 1646 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 6605520000 is about 81274.3501973409. The cubic root of 6605520000 is about 1876.3002536620.

Adding to 6605520000 its reverse (255066), we get a palindrome (6605775066).

The spelling of 6605520000 in words is "six billion, six hundred five million, five hundred twenty thousand".