6553015680 has 128 divisors (see below), whose sum is σ = 20918062080. Its totient is φ = 1744934912.

The previous prime is 6553015663. The next prime is 6553015709. The reversal of 6553015680 is 865103556.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1585777 + ... + 1589903.

It is an arithmetic number, because the mean of its divisors is an integer number (163422360).

Almost surely, 2^6553015680 is an apocalyptic number.

6553015680 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 6553015680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10459031040).

6553015680 is an abundant number, since it is smaller than the sum of its proper divisors (14365046400).

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

6553015680 is a wasteful number, since it uses less digits than its factorization.

6553015680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4976 (or 4964 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 6553015680 is about 80950.6990704836. The cubic root of 6553015680 is about 1871.3157335491.

The spelling of 6553015680 in words is "six billion, five hundred fifty-three million, fifteen thousand, six hundred eighty".