6539968000 has 160 divisors (see below), whose sum is σ = 17269975008. Its totient is φ = 2461696000.

The previous prime is 6539967977. The next prime is 6539968003. The reversal of 6539968000 is 8699356.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539968003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1084995 + ... + 1091005.

Almost surely, 2^6539968000 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 6539968000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8634987504).

6539968000 is an abundant number, since it is smaller than the sum of its proper divisors (10730007008).

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

6539968000 is an equidigital number, since it uses as much as digits as its factorization.

6539968000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6061 (or 6035 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 6539968000 is about 80870.0686286342. The cubic root of 6539968000 is about 1870.0729188872.

The spelling of 6539968000 in words is "six billion, five hundred thirty-nine million, nine hundred sixty-eight thousand".