65943119413 has 4 divisors (see below), whose sum is σ = 66168181548. Its totient is φ = 65718057280.

The previous prime is 65943119393. The next prime is 65943119467. The reversal of 65943119413 is 31491134956.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32471319204 + 33471800209 = 180198^2 + 182953^2 .

It is a cyclic number.

It is not a de Polignac number, because 65943119413 - 2¹⁷ = 65942988341 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 (65943119213) 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 3 ways as a sum of consecutive naturals, for example, 112530628 + ... + 112531213.

It is an arithmetic number, because the mean of its divisors is an integer number (16542045387).

Almost surely, 2^65943119413 is an apocalyptic number.

It is an amenable number.

65943119413 is a deficient number, since it is larger than the sum of its proper divisors (225062135).

65943119413 is a wasteful number, since it uses less digits than its factorization.

65943119413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225062134.

The product of its digits is 349920, while the sum is 46.

The spelling of 65943119413 in words is "sixty-five billion, nine hundred forty-three million, one hundred nineteen thousand, four hundred thirteen".