6564582516 has 24 divisors (see below), whose sum is σ = 15354821440. Its totient is φ = 2182842432.

The previous prime is 6564582511. The next prime is 6564582551. The reversal of 6564582516 is 6152854656.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564582511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 663856 + ... + 673671.

Almost surely, 2^6564582516 is an apocalyptic number.

It is an amenable number.

6564582516 is an abundant number, since it is smaller than the sum of its proper divisors (8790238924).

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

6564582516 is a wasteful number, since it uses less digits than its factorization.

6564582516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337943 (or 1337941 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 48.

The square root of 6564582516 is about 81022.1112783418. Note that the first 3 decimals coincide. The cubic root of 6564582516 is about 1872.4161164512.

The spelling of 6564582516 in words is "six billion, five hundred sixty-four million, five hundred eighty-two thousand, five hundred sixteen".