65217222205505 has 8 divisors (see below), whose sum is σ = 78260710142592. Its totient is φ = 52173748767088.

The previous prime is 65217222205501. The next prime is 65217222205511. The reversal of 65217222205505 is 50550222271256.

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 65217222205505 - 2² = 65217222205501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65217222205501) 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 7 ways as a sum of consecutive naturals, for example, 14617994 + ... + 18550476.

It is an arithmetic number, because the mean of its divisors is an integer number (9782588767824).

Almost surely, 2^{65217222205505} is an apocalyptic number.

It is an amenable number.

65217222205505 is a deficient number, since it is larger than the sum of its proper divisors (13043487937087).

65217222205505 is a wasteful number, since it uses less digits than its factorization.

65217222205505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7249335.

The product of its (nonzero) digits is 840000, while the sum is 44.

The spelling of 65217222205505 in words is "sixty-five trillion, two hundred seventeen billion, two hundred twenty-two million, two hundred five thousand, five hundred five".