204726020687 has 2 divisors, whose sum is σ = 204726020688. Its totient is φ = 204726020686.

The previous prime is 204726020651. The next prime is 204726020689. The reversal of 204726020687 is 786020627402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204726020687 - 2⁸ = 204726020431 is a prime.

Together with 204726020689, 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 (204726020689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102363010343 + 102363010344.

It is an arithmetic number, because the mean of its divisors is an integer number (102363010344).

Almost surely, 2^204726020687 is an apocalyptic number.

204726020687 is a deficient number, since it is larger than the sum of its proper divisors (1).

204726020687 is an equidigital number, since it uses as much as digits as its factorization.

204726020687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 204726020687 in words is "two hundred four billion, seven hundred twenty-six million, twenty thousand, six hundred eighty-seven".