344664134665 has 4 divisors (see below), whose sum is σ = 413596961604. Its totient is φ = 275731307728.

The previous prime is 344664134663. The next prime is 344664134681. The reversal of 344664134665 is 566431466443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566431466443 = 43 ⋅13172824801.

It can be written as a sum of positive squares in 2 ways, for example, as 143479591369 + 201184543296 = 378787^2 + 448536^2 .

It is a cyclic number.

It is not a de Polignac number, because 344664134665 - 2¹ = 344664134663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (344664134663) 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, 34466413462 + ... + 34466413471.

It is an arithmetic number, because the mean of its divisors is an integer number (103399240401).

Almost surely, 2^344664134665 is an apocalyptic number.

It is an amenable number.

344664134665 is a deficient number, since it is larger than the sum of its proper divisors (68932826939).

344664134665 is an equidigital number, since it uses as much as digits as its factorization.

344664134665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68932826938.

The product of its digits is 14929920, while the sum is 52.

The spelling of 344664134665 in words is "three hundred forty-four billion, six hundred sixty-four million, one hundred thirty-four thousand, six hundred sixty-five".