20344160444563 has 8 divisors (see below), whose sum is σ = 21434792940288. Its totient is φ = 19270703263944.

The previous prime is 20344160444551. The next prime is 20344160444581. The reversal of 20344160444563 is 36544406144302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20344160444563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20344160744563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4293826345 + ... + 4293831082.

It is an arithmetic number, because the mean of its divisors is an integer number (2679349117536).

Almost surely, 2^{20344160444563} is an apocalyptic number.

20344160444563 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20344160444563 is a deficient number, since it is larger than the sum of its proper divisors (1090632495725).

20344160444563 is a wasteful number, since it uses less digits than its factorization.

20344160444563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8587657553.

The product of its (nonzero) digits is 3317760, while the sum is 46.

Adding to 20344160444563 its reverse (36544406144302), we get a palindrome (56888566588865).

The spelling of 20344160444563 in words is "twenty trillion, three hundred forty-four billion, one hundred sixty million, four hundred forty-four thousand, five hundred sixty-three".