65311345340 has 24 divisors (see below), whose sum is σ = 137158914480. Its totient is φ = 26123568768.

The previous prime is 65311345289. The next prime is 65311345439. The reversal of 65311345340 is 4354311356.

It is a self number, because there is not a number n which added to its sum of digits gives 65311345340.

It is a congruent number.

It is an unprimeable number.

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, 768824 + ... + 849536.

It is an arithmetic number, because the mean of its divisors is an integer number (5714954770).

Almost surely, 2^65311345340 is an apocalyptic number.

It is an amenable number.

65311345340 is an abundant number, since it is smaller than the sum of its proper divisors (71847569140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65311345340 is a wasteful number, since it uses less digits than its factorization.

65311345340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121181 (or 121179 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 65311345340 its reverse (4354311356), we get a palindrome (69665656696).

The spelling of 65311345340 in words is "sixty-five billion, three hundred eleven million, three hundred forty-five thousand, three hundred forty".