20344023013345 has 8 divisors (see below), whose sum is σ = 24539318951976. Its totient is φ = 16190890853376.

The previous prime is 20344023013339. The next prime is 20344023013387. The reversal of 20344023013345 is 54331032044302.

It can be written as a sum of positive squares in 4 ways, for example, as 876831850449 + 19467191162896 = 936393^2 + 4412164^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20344023013345 - 2⁵ = 20344023013313 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 20344023013345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10540943602 + ... + 10540945531.

It is an arithmetic number, because the mean of its divisors is an integer number (3067414868997).

Almost surely, 2^{20344023013345} is an apocalyptic number.

It is an amenable number.

20344023013345 is a deficient number, since it is larger than the sum of its proper divisors (4195295938631).

20344023013345 is a wasteful number, since it uses less digits than its factorization.

20344023013345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21081889331.

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 20344023013345 its reverse (54331032044302), we get a palindrome (74675055057647).

The spelling of 20344023013345 in words is "twenty trillion, three hundred forty-four billion, twenty-three million, thirteen thousand, three hundred forty-five".