20363163673 has 2 divisors, whose sum is σ = 20363163674. Its totient is φ = 20363163672.

The previous prime is 20363163641. The next prime is 20363163679. The reversal of 20363163673 is 37636136302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20361292249 + 1871424 = 142693^2 + 1368^2 .

It is a cyclic number.

It is not a de Polignac number, because 20363163673 - 2⁵ = 20363163641 is a prime.

It is a super-3 number, since 3×20363163673³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20363163679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10181581836 + 10181581837.

It is an arithmetic number, because the mean of its divisors is an integer number (10181581837).

Almost surely, 2^20363163673 is an apocalyptic number.

It is an amenable number.

20363163673 is a deficient number, since it is larger than the sum of its proper divisors (1).

20363163673 is an equidigital number, since it uses as much as digits as its factorization.

20363163673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 40.

Adding to 20363163673 its reverse (37636136302), we get a palindrome (57999299975).

The spelling of 20363163673 in words is "twenty billion, three hundred sixty-three million, one hundred sixty-three thousand, six hundred seventy-three".