65341857321 has 18 divisors (see below), whose sum is σ = 102201368958. Its totient is φ = 40210372800.

The previous prime is 65341857289. The next prime is 65341857323. The reversal of 65341857321 is 12375814356.

It is a happy number.

65341857321 is a `hidden beast` number, since 6 + 53 + 4 + 1 + 8 + 573 + 21 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1630544400 + 63711312921 = 40380^2 + 252411^2 .

It is not a de Polignac number, because 65341857321 - 2⁵ = 65341857289 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65341857323) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 21478380 + ... + 21481421.

It is an arithmetic number, because the mean of its divisors is an integer number (5677853831).

Almost surely, 2^65341857321 is an apocalyptic number.

It is an amenable number.

65341857321 is a deficient number, since it is larger than the sum of its proper divisors (36859511637).

65341857321 is a wasteful number, since it uses less digits than its factorization.

65341857321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42959833 (or 42959817 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 65341857321 in words is "sixty-five billion, three hundred forty-one million, eight hundred fifty-seven thousand, three hundred twenty-one".