6545324561 has 8 divisors (see below), whose sum is σ = 6596251200. Its totient is φ = 6494557840.

The previous prime is 6545324491. The next prime is 6545324587. The reversal of 6545324561 is 1654235456.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6545324561 - 2¹⁰ = 6545323537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6545324861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42860 + ... + 122178.

It is an arithmetic number, because the mean of its divisors is an integer number (824531400).

Almost surely, 2^6545324561 is an apocalyptic number.

It is an amenable number.

6545324561 is a deficient number, since it is larger than the sum of its proper divisors (50926639).

6545324561 is a wasteful number, since it uses less digits than its factorization.

6545324561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79959.

The product of its digits is 432000, while the sum is 41.

The square root of 6545324561 is about 80903.1801661715. The cubic root of 6545324561 is about 1870.5833406537.

The spelling of 6545324561 in words is "six billion, five hundred forty-five million, three hundred twenty-four thousand, five hundred sixty-one".