65943608441 has 4 divisors (see below), whose sum is σ = 66048115584. Its totient is φ = 65839101300.

The previous prime is 65943608429. The next prime is 65943608449. The reversal of 65943608441 is 14480634956.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65943608441 - 2¹⁰ = 65943607417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65943608441.

It is not an unprimeable number, because it can be changed into a prime (65943608449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52252625 + ... + 52253886.

It is an arithmetic number, because the mean of its divisors is an integer number (16512028896).

Almost surely, 2^65943608441 is an apocalyptic number.

It is an amenable number.

65943608441 is a deficient number, since it is larger than the sum of its proper divisors (104507143).

65943608441 is a wasteful number, since it uses less digits than its factorization.

65943608441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104507142.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 65943608441 in words is "sixty-five billion, nine hundred forty-three million, six hundred eight thousand, four hundred forty-one".