65052219865 has 8 divisors (see below), whose sum is σ = 78067581768. Its totient is φ = 52038497280.

The previous prime is 65052219863. The next prime is 65052219923. The reversal of 65052219865 is 56891225056.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44364575641 + 20687644224 = 210629^2 + 143832^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65052219865 - 2¹ = 65052219863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65052219863) 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, 320766 + ... + 482695.

It is an arithmetic number, because the mean of its divisors is an integer number (9758447721).

Almost surely, 2^65052219865 is an apocalyptic number.

It is an amenable number.

65052219865 is a deficient number, since it is larger than the sum of its proper divisors (13015361903).

65052219865 is a wasteful number, since it uses less digits than its factorization.

65052219865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819659.

The product of its (nonzero) digits is 1296000, while the sum is 49.

The spelling of 65052219865 in words is "sixty-five billion, fifty-two million, two hundred nineteen thousand, eight hundred sixty-five".