20012055163 has 2 divisors, whose sum is σ = 20012055164. Its totient is φ = 20012055162.

The previous prime is 20012055137. The next prime is 20012055179. The reversal of 20012055163 is 36155021002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012055163 - 2⁵ = 20012055131 is a prime.

It is not a weakly prime, because it can be changed into another prime (20012055113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006027581 + 10006027582.

It is an arithmetic number, because the mean of its divisors is an integer number (10006027582).

Almost surely, 2^20012055163 is an apocalyptic number.

20012055163 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012055163 is an equidigital number, since it uses as much as digits as its factorization.

20012055163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 20012055163 its reverse (36155021002), we get a palindrome (56167076165).

The spelling of 20012055163 in words is "twenty billion, twelve million, fifty-five thousand, one hundred sixty-three".