6515234784 has 192 divisors, whose sum is σ = 20075489280. Its totient is φ = 2052449280.

The previous prime is 6515234783. The next prime is 6515234797. The reversal of 6515234784 is 4874325156.

6515234784 is a `hidden beast` number, since 6 + 5 + 1 + 523 + 47 + 84 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6515234783) 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, 1148884 + ... + 1154540.

It is an arithmetic number, because the mean of its divisors is an integer number (104559840).

Almost surely, 2^6515234784 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 6515234784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10037744640).

6515234784 is an abundant number, since it is smaller than the sum of its proper divisors (13560254496).

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

6515234784 is a wasteful number, since it uses less digits than its factorization.

6515234784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5750 (or 5736 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 6515234784 is about 80717.0043051648. The cubic root of 6515234784 is about 1867.7124920706.

The spelling of 6515234784 in words is "six billion, five hundred fifteen million, two hundred thirty-four thousand, seven hundred eighty-four".