20423445343005 has 16 divisors (see below), whose sum is σ = 33091151950080. Its totient is φ = 10754624382528.

The previous prime is 20423445342961. The next prime is 20423445343009. The reversal of 20423445343005 is 50034354432402.

It is not a de Polignac number, because 20423445343005 - 2⁸ = 20423445342749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423445343009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8617486302 + ... + 8617488671.

It is an arithmetic number, because the mean of its divisors is an integer number (2068196996880).

Almost surely, 2^{20423445343005} is an apocalyptic number.

It is an amenable number.

20423445343005 is a deficient number, since it is larger than the sum of its proper divisors (12667706607075).

20423445343005 is a wasteful number, since it uses less digits than its factorization.

20423445343005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17234975060.

The product of its (nonzero) digits is 691200, while the sum is 39.

Adding to 20423445343005 its reverse (50034354432402), we get a palindrome (70457799775407).

The spelling of 20423445343005 in words is "twenty trillion, four hundred twenty-three billion, four hundred forty-five million, three hundred forty-three thousand, five".