20001143024323 has 16 divisors (see below), whose sum is σ = 20984647127040. Its totient is φ = 19027184039424.

The previous prime is 20001143024321. The next prime is 20001143024327. The reversal of 20001143024323 is 32342034110002.

It is a cyclic number.

It is not a de Polignac number, because 20001143024323 - 2¹ = 20001143024321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001143024321) 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, 15626590 + ... + 16858012.

It is an arithmetic number, because the mean of its divisors is an integer number (1311540445440).

Almost surely, 2^{20001143024323} is an apocalyptic number.

20001143024323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20001143024323 is a deficient number, since it is larger than the sum of its proper divisors (983504102717).

20001143024323 is a wasteful number, since it uses less digits than its factorization.

20001143024323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235298.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20001143024323 its reverse (32342034110002), we get a palindrome (52343177134325).

The spelling of 20001143024323 in words is "twenty trillion, one billion, one hundred forty-three million, twenty-four thousand, three hundred twenty-three".