20123120063 has 2 divisors, whose sum is σ = 20123120064. Its totient is φ = 20123120062.

The previous prime is 20123120057. The next prime is 20123120119. The reversal of 20123120063 is 36002132102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20123120063 - 2²⁴ = 20106342847 is a prime.

It is a super-2 number, since 2×20123120063² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123120363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061560031 + 10061560032.

It is an arithmetic number, because the mean of its divisors is an integer number (10061560032).

Almost surely, 2^20123120063 is an apocalyptic number.

20123120063 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123120063 is an equidigital number, since it uses as much as digits as its factorization.

20123120063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20123120063 its reverse (36002132102), we get a palindrome (56125252165).

The spelling of 20123120063 in words is "twenty billion, one hundred twenty-three million, one hundred twenty thousand, sixty-three".