20423120432107 has 2 divisors, whose sum is σ = 20423120432108. Its totient is φ = 20423120432106.

The previous prime is 20423120432083. The next prime is 20423120432171. The reversal of 20423120432107 is 70123402132402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20423120432107 is a prime.

It is not a weakly prime, because it can be changed into another prime (20423120492107) 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, 10211560216053 + 10211560216054.

It is an arithmetic number, because the mean of its divisors is an integer number (10211560216054).

Almost surely, 2^{20423120432107} is an apocalyptic number.

20423120432107 is a deficient number, since it is larger than the sum of its proper divisors (1).

20423120432107 is an equidigital number, since it uses as much as digits as its factorization.

20423120432107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 31.

Adding to 20423120432107 its reverse (70123402132402), we get a palindrome (90546522564509).

The spelling of 20423120432107 in words is "twenty trillion, four hundred twenty-three billion, one hundred twenty million, four hundred thirty-two thousand, one hundred seven".