20416543016323 has 4 divisors (see below), whose sum is σ = 20891346342328. Its totient is φ = 19941739690320.

The previous prime is 20416543016297. The next prime is 20416543016341. The reversal of 20416543016323 is 32361034561402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20416543016323 - 2¹⁷ = 20416542885251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20416543016123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237401662938 + ... + 237401663023.

It is an arithmetic number, because the mean of its divisors is an integer number (5222836585582).

Almost surely, 2^{20416543016323} is an apocalyptic number.

20416543016323 is a deficient number, since it is larger than the sum of its proper divisors (474803326005).

20416543016323 is an equidigital number, since it uses as much as digits as its factorization.

20416543016323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474803326004.

The product of its (nonzero) digits is 311040, while the sum is 40.

Adding to 20416543016323 its reverse (32361034561402), we get a palindrome (52777577577725).

The spelling of 20416543016323 in words is "twenty trillion, four hundred sixteen billion, five hundred forty-three million, sixteen thousand, three hundred twenty-three".