20126372405323 has 2 divisors, whose sum is σ = 20126372405324. Its totient is φ = 20126372405322.

The previous prime is 20126372405201. The next prime is 20126372405339. The reversal of 20126372405323 is 32350427362102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20126372405323 - 2²¹ = 20126370308171 is a prime.

It is not a weakly prime, because it can be changed into another prime (20126372445323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10063186202661 + 10063186202662.

It is an arithmetic number, because the mean of its divisors is an integer number (10063186202662).

Almost surely, 2^{20126372405323} is an apocalyptic number.

20126372405323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20126372405323 is an equidigital number, since it uses as much as digits as its factorization.

20126372405323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 40.

Adding to 20126372405323 its reverse (32350427362102), we get a palindrome (52476799767425).

The spelling of 20126372405323 in words is "twenty trillion, one hundred twenty-six billion, three hundred seventy-two million, four hundred five thousand, three hundred twenty-three".