65220616009 has 8 divisors (see below), whose sum is σ = 67920302592. Its totient is φ = 62558166720.

The previous prime is 65220615997. The next prime is 65220616051. The reversal of 65220616009 is 90061602256.

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 65220616009 - 2¹³ = 65220607817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65220616099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9305749 + ... + 9312754.

It is an arithmetic number, because the mean of its divisors is an integer number (8490037824).

Almost surely, 2^65220616009 is an apocalyptic number.

It is an amenable number.

65220616009 is a deficient number, since it is larger than the sum of its proper divisors (2699686583).

65220616009 is a wasteful number, since it uses less digits than its factorization.

65220616009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18618647.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 65220616009 in words is "sixty-five billion, two hundred twenty million, six hundred sixteen thousand, nine".