6564325044 has 48 divisors (see below), whose sum is σ = 15876846720. Its totient is φ = 2108400000.

The previous prime is 6564325037. The next prime is 6564325057. The reversal of 6564325044 is 4405234656.

It is a junction number, because it is equal to n+sod(n) for n = 6564324993 and 6564325011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156294 + ... + 193794.

It is an arithmetic number, because the mean of its divisors is an integer number (330767640).

Almost surely, 2^6564325044 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 6564325044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7938423360).

6564325044 is an abundant number, since it is smaller than the sum of its proper divisors (9312521676).

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

6564325044 is a wasteful number, since it uses less digits than its factorization.

6564325044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38040 (or 38038 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

The square root of 6564325044 is about 81020.5223631643. The cubic root of 6564325044 is about 1872.3916365484.

The spelling of 6564325044 in words is "six billion, five hundred sixty-four million, three hundred twenty-five thousand, forty-four".