65864693161 has 8 divisors (see below), whose sum is σ = 65938552064. Its totient is φ = 65790869760.

The previous prime is 65864693159. The next prime is 65864693177. The reversal of 65864693161 is 16139646856.

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 65864693161 - 2¹ = 65864693159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65364693161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5438665 + ... + 5450761.

It is an arithmetic number, because the mean of its divisors is an integer number (8242319008).

Almost surely, 2^65864693161 is an apocalyptic number.

It is an amenable number.

65864693161 is a deficient number, since it is larger than the sum of its proper divisors (73858903).

65864693161 is a wasteful number, since it uses less digits than its factorization.

65864693161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17751.

The product of its digits is 5598720, while the sum is 55.

The spelling of 65864693161 in words is "sixty-five billion, eight hundred sixty-four million, six hundred ninety-three thousand, one hundred sixty-one".