65341518343221 has 16 divisors (see below), whose sum is σ = 87147632194560. Its totient is φ = 43548209126400.

The previous prime is 65341518343201. The next prime is 65341518343261. The reversal of 65341518343221 is 12234381514356.

It is not a de Polignac number, because 65341518343221 - 2¹⁹ = 65341517818933 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65341518343201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436323685 + ... + 436473413.

It is an arithmetic number, because the mean of its divisors is an integer number (5446727012160).

Almost surely, 2^{65341518343221} is an apocalyptic number.

It is an amenable number.

65341518343221 is a deficient number, since it is larger than the sum of its proper divisors (21806113851339).

65341518343221 is a wasteful number, since it uses less digits than its factorization.

65341518343221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191516.

The product of its digits is 2073600, while the sum is 48.

Adding to 65341518343221 its reverse (12234381514356), we get a palindrome (77575899857577).

The spelling of 65341518343221 in words is "sixty-five trillion, three hundred forty-one billion, five hundred eighteen million, three hundred forty-three thousand, two hundred twenty-one".