20346320163 has 48 divisors (see below), whose sum is σ = 31036331520. Its totient is φ = 11831444352.

The previous prime is 20346320051. The next prime is 20346320219. The reversal of 20346320163 is 36102364302.

It is not a de Polignac number, because 20346320163 - 2¹⁴ = 20346303779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20346320163.

It is not an unprimeable number, because it can be changed into a prime (20346320663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 676320 + ... + 705762.

It is an arithmetic number, because the mean of its divisors is an integer number (646590240).

Almost surely, 2^20346320163 is an apocalyptic number.

20346320163 is a deficient number, since it is larger than the sum of its proper divisors (10690011357).

20346320163 is a wasteful number, since it uses less digits than its factorization.

20346320163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29548 (or 29535 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 20346320163 its reverse (36102364302), we get a palindrome (56448684465).

The spelling of 20346320163 in words is "twenty billion, three hundred forty-six million, three hundred twenty thousand, one hundred sixty-three".