6565616045 has 16 divisors (see below), whose sum is σ = 7924894848. Its totient is φ = 5221809600.

The previous prime is 6565616033. The next prime is 6565616047. The reversal of 6565616045 is 5406165656.

It is a happy number.

It is not a de Polignac number, because 6565616045 - 2⁸ = 6565615789 is a prime.

It is a super-2 number, since 2×6565616045² = 86214628100722884050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6565615987 and 6565616005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6565616047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 641720 + ... + 651870.

It is an arithmetic number, because the mean of its divisors is an integer number (495305928).

Almost surely, 2^6565616045 is an apocalyptic number.

It is an amenable number.

6565616045 is a deficient number, since it is larger than the sum of its proper divisors (1359278803).

6565616045 is a wasteful number, since it uses less digits than its factorization.

6565616045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10900.

The product of its (nonzero) digits is 648000, while the sum is 44.

The square root of 6565616045 is about 81028.4890948856. The cubic root of 6565616045 is about 1872.5143757998.

The spelling of 6565616045 in words is "six billion, five hundred sixty-five million, six hundred sixteen thousand, forty-five".