65239672161 has 8 divisors (see below), whose sum is σ = 86995916800. Its totient is φ = 43488271152.

The previous prime is 65239672151. The next prime is 65239672177. The reversal of 65239672161 is 16127693256.

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

It is not a de Polignac number, because 65239672161 - 2⁵ = 65239672129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 65239672161.

It is not an unprimeable number, because it can be changed into a prime (65239672151) 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 7 ways as a sum of consecutive naturals, for example, 1179361 + ... + 1233438.

It is an arithmetic number, because the mean of its divisors is an integer number (10874489600).

Almost surely, 2^65239672161 is an apocalyptic number.

It is an amenable number.

65239672161 is a deficient number, since it is larger than the sum of its proper divisors (21756244639).

65239672161 is a wasteful number, since it uses less digits than its factorization.

65239672161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421815.

The product of its digits is 816480, while the sum is 48.

The spelling of 65239672161 in words is "sixty-five billion, two hundred thirty-nine million, six hundred seventy-two thousand, one hundred sixty-one".