204450803111 has 2 divisors, whose sum is σ = 204450803112. Its totient is φ = 204450803110.

The previous prime is 204450803101. The next prime is 204450803113. The reversal of 204450803111 is 111308054402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204450803111 - 2²⁶ = 204383694247 is a prime.

Together with 204450803113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204450803113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102225401555 + 102225401556.

It is an arithmetic number, because the mean of its divisors is an integer number (102225401556).

Almost surely, 2^204450803111 is an apocalyptic number.

204450803111 is a deficient number, since it is larger than the sum of its proper divisors (1).

204450803111 is an equidigital number, since it uses as much as digits as its factorization.

204450803111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 204450803111 its reverse (111308054402), we get a palindrome (315758857513).

The spelling of 204450803111 in words is "two hundred four billion, four hundred fifty million, eight hundred three thousand, one hundred eleven".