20423041420145 has 64 divisors (see below), whose sum is σ = 31483759104000. Its totient is φ = 12361507538688.

The previous prime is 20423041420129. The next prime is 20423041420163. The reversal of 20423041420145 is 54102414032402.

It is not a de Polignac number, because 20423041420145 - 2⁴ = 20423041420129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36338162 + ... + 36895908.

It is an arithmetic number, because the mean of its divisors is an integer number (491933736000).

Almost surely, 2^{20423041420145} is an apocalyptic number.

It is an amenable number.

20423041420145 is a deficient number, since it is larger than the sum of its proper divisors (11060717683855).

20423041420145 is a wasteful number, since it uses less digits than its factorization.

20423041420145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561294.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 20423041420145 its reverse (54102414032402), we get a palindrome (74525455452547).

The spelling of 20423041420145 in words is "twenty trillion, four hundred twenty-three billion, forty-one million, four hundred twenty thousand, one hundred forty-five".