65016606506609 has 32 divisors (see below), whose sum is σ = 67771389312000. Its totient is φ = 62336283969024.

The previous prime is 65016606506567. The next prime is 65016606506639. The reversal of 65016606506609 is 90660560661056.

It is a cyclic number.

It is not a de Polignac number, because 65016606506609 - 2²⁴ = 65016589729393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65016606506639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 419338469 + ... + 419493485.

It is an arithmetic number, because the mean of its divisors is an integer number (2117855916000).

Almost surely, 2^{65016606506609} is an apocalyptic number.

It is an amenable number.

65016606506609 is a deficient number, since it is larger than the sum of its proper divisors (2754782805391).

65016606506609 is a wasteful number, since it uses less digits than its factorization.

65016606506609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156177.

The product of its (nonzero) digits is 10497600, while the sum is 56.

The spelling of 65016606506609 in words is "sixty-five trillion, sixteen billion, six hundred six million, five hundred six thousand, six hundred nine".