6565005601 has 16 divisors (see below), whose sum is σ = 8221667328. Its totient is φ = 5092635600.

The previous prime is 6565005541. The next prime is 6565005619. The reversal of 6565005601 is 1065005656.

It is a cyclic number.

It is not a de Polignac number, because 6565005601 - 2⁹ = 6565005089 is a prime.

It is a super-2 number, since 2×6565005601² = 86198597082322742402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6565005631) 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 15 ways as a sum of consecutive naturals, for example, 173995 + ... + 208336.

It is an arithmetic number, because the mean of its divisors is an integer number (513854208).

Almost surely, 2^6565005601 is an apocalyptic number.

It is an amenable number.

6565005601 is a deficient number, since it is larger than the sum of its proper divisors (1656661727).

6565005601 is a wasteful number, since it uses less digits than its factorization.

6565005601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382572.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 6565005601 is about 81024.7221593508. The cubic root of 6565005601 is about 1872.4563411039.

Subtracting from 6565005601 its reverse (1065005656), we obtain a palindrome (5499999945).

The spelling of 6565005601 in words is "six billion, five hundred sixty-five million, five thousand, six hundred one".