204043403223973 has 2 divisors, whose sum is σ = 204043403223974. Its totient is φ = 204043403223972.

The previous prime is 204043403223971. The next prime is 204043403224007. The reversal of 204043403223973 is 379322304340402.

It is a happy number.

204043403223973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155546343999684 + 48497059224289 = 12471822^2 + 6963983^2 .

It is a cyclic number.

It is not a de Polignac number, because 204043403223973 - 2¹ = 204043403223971 is a prime.

Together with 204043403223971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204043403223971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102021701611986 + 102021701611987.

It is an arithmetic number, because the mean of its divisors is an integer number (102021701611987).

Almost surely, 2^{204043403223973} is an apocalyptic number.

It is an amenable number.

204043403223973 is a deficient number, since it is larger than the sum of its proper divisors (1).

204043403223973 is an equidigital number, since it uses as much as digits as its factorization.

204043403223973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 46.

The spelling of 204043403223973 in words is "two hundred four trillion, forty-three billion, four hundred three million, two hundred twenty-three thousand, nine hundred seventy-three".