6539040000 has 540 divisors, whose sum is σ = 24903278400. Its totient is φ = 1645056000.

The previous prime is 6539039993. The next prime is 6539040073. The reversal of 6539040000 is 409356.

It is a happy number.

6539040000 is a `hidden beast` number, since 653 + 9 + 0 + 4 + 0 + 0 + 0 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 27359881 + ... + 27360119.

Almost surely, 2^6539040000 is an apocalyptic number.

6539040000 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 6539040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12451639200).

6539040000 is an abundant number, since it is smaller than the sum of its proper divisors (18364238400).

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

6539040000 is a wasteful number, since it uses less digits than its factorization.

6539040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 6539040000 is about 80864.3308263909. The cubic root of 6539040000 is about 1869.9844622995.

Adding to 6539040000 its reverse (409356), we get a palindrome (6539449356).

The spelling of 6539040000 in words is "six billion, five hundred thirty-nine million, forty thousand".