65613400343 has 4 divisors (see below), whose sum is σ = 66226609800. Its totient is φ = 65000190888.

The previous prime is 65613400297. The next prime is 65613400367. The reversal of 65613400343 is 34300431656.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65613400343 - 2¹⁶ = 65613334807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65613400373) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 306604568 + ... + 306604781.

It is an arithmetic number, because the mean of its divisors is an integer number (16556652450).

Almost surely, 2^65613400343 is an apocalyptic number.

65613400343 is a deficient number, since it is larger than the sum of its proper divisors (613209457).

65613400343 is a wasteful number, since it uses less digits than its factorization.

65613400343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613209456.

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 65613400343 its reverse (34300431656), we get a palindrome (99913831999).

The spelling of 65613400343 in words is "sixty-five billion, six hundred thirteen million, four hundred thousand, three hundred forty-three".