206204120747 has 2 divisors, whose sum is σ = 206204120748. Its totient is φ = 206204120746.

The previous prime is 206204120623. The next prime is 206204120777. The reversal of 206204120747 is 747021402602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206204120747 is a prime.

It is not a weakly prime, because it can be changed into another prime (206204120777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103102060373 + 103102060374.

It is an arithmetic number, because the mean of its divisors is an integer number (103102060374).

Almost surely, 2^206204120747 is an apocalyptic number.

206204120747 is a deficient number, since it is larger than the sum of its proper divisors (1).

206204120747 is an equidigital number, since it uses as much as digits as its factorization.

206204120747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 35.

The spelling of 206204120747 in words is "two hundred six billion, two hundred four million, one hundred twenty thousand, seven hundred forty-seven".