20204452456343 has 2 divisors, whose sum is σ = 20204452456344. Its totient is φ = 20204452456342.

The previous prime is 20204452456333. The next prime is 20204452456387. The reversal of 20204452456343 is 34365425440202.

It is an a-pointer prime, because the next prime (20204452456387) can be obtained adding 20204452456343 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20204452456343 - 2²⁸ = 20204184020887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20204452456294 and 20204452456303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20204452456333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10102226228171 + 10102226228172.

It is an arithmetic number, because the mean of its divisors is an integer number (10102226228172).

Almost surely, 2^{20204452456343} is an apocalyptic number.

20204452456343 is a deficient number, since it is larger than the sum of its proper divisors (1).

20204452456343 is an equidigital number, since it uses as much as digits as its factorization.

20204452456343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2764800, while the sum is 44.

Adding to 20204452456343 its reverse (34365425440202), we get a palindrome (54569877896545).

The spelling of 20204452456343 in words is "twenty trillion, two hundred four billion, four hundred fifty-two million, four hundred fifty-six thousand, three hundred forty-three".