65044220869 has 16 divisors (see below), whose sum is σ = 68267243520. Its totient is φ = 61854503040.

The previous prime is 65044220867. The next prime is 65044220881. The reversal of 65044220869 is 96802244056.

It is a cyclic number.

It is not a de Polignac number, because 65044220869 - 2¹ = 65044220867 is a prime.

It is a super-2 number, since 2×65044220869² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65044220867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10439047 + ... + 10445275.

It is an arithmetic number, because the mean of its divisors is an integer number (4266702720).

Almost surely, 2^65044220869 is an apocalyptic number.

It is an amenable number.

65044220869 is a deficient number, since it is larger than the sum of its proper divisors (3223022651).

65044220869 is a wasteful number, since it uses less digits than its factorization.

65044220869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8820.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 65044220869 in words is "sixty-five billion, forty-four million, two hundred twenty thousand, eight hundred sixty-nine".