20320245017163 has 48 divisors (see below), whose sum is σ = 36409328091136. Its totient is φ = 10633974321600.

The previous prime is 20320245017141. The next prime is 20320245017231. The reversal of 20320245017163 is 36171054202302.

20320245017163 is a `hidden beast` number, since 2 + 0 + 3 + 2 + 0 + 24 + 501 + 71 + 63 = 666.

It is not a de Polignac number, because 20320245017163 - 2⁶ = 20320245017099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20320245017063) 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, 97577263 + ... + 97785288.

Almost surely, 2^{20320245017163} is an apocalyptic number.

20320245017163 is a deficient number, since it is larger than the sum of its proper divisors (16089083073973).

20320245017163 is a wasteful number, since it uses less digits than its factorization.

20320245017163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195362704 (or 195362701 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

Adding to 20320245017163 its reverse (36171054202302), we get a palindrome (56491299219465).

The spelling of 20320245017163 in words is "twenty trillion, three hundred twenty billion, two hundred forty-five million, seventeen thousand, one hundred sixty-three".