6564465541 has 2 divisors, whose sum is σ = 6564465542. Its totient is φ = 6564465540.

The previous prime is 6564465539. The next prime is 6564465547. The reversal of 6564465541 is 1455644656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4777712641 + 1786752900 = 69121^2 + 42270^2 .

It is a cyclic number.

It is not a de Polignac number, because 6564465541 - 2¹ = 6564465539 is a prime.

It is a super-3 number, since 3×6564465541³ (a number of 30 digits) contains 333 as substring.

Together with 6564465539, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 6564465491 and 6564465500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6564465547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3282232770 + 3282232771.

It is an arithmetic number, because the mean of its divisors is an integer number (3282232771).

Almost surely, 2^6564465541 is an apocalyptic number.

It is an amenable number.

6564465541 is a deficient number, since it is larger than the sum of its proper divisors (1).

6564465541 is an equidigital number, since it uses as much as digits as its factorization.

6564465541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728000, while the sum is 46.

The square root of 6564465541 is about 81021.3894042802. The cubic root of 6564465541 is about 1872.4049947906.

The spelling of 6564465541 in words is "six billion, five hundred sixty-four million, four hundred sixty-five thousand, five hundred forty-one".