210204243040249 has 2 divisors, whose sum is σ = 210204243040250. Its totient is φ = 210204243040248.

The previous prime is 210204243040189. The next prime is 210204243040261. The reversal of 210204243040249 is 942040342402012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206495980321024 + 3708262719225 = 14369968^2 + 1925685^2 .

It is a cyclic number.

It is not a de Polignac number, because 210204243040249 - 2¹³ = 210204243032057 is a prime.

It is not a weakly prime, because it can be changed into another prime (210204243040049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105102121520124 + 105102121520125.

It is an arithmetic number, because the mean of its divisors is an integer number (105102121520125).

Almost surely, 2^{210204243040249} is an apocalyptic number.

It is an amenable number.

210204243040249 is a deficient number, since it is larger than the sum of its proper divisors (1).

210204243040249 is an equidigital number, since it uses as much as digits as its factorization.

210204243040249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 210204243040249 in words is "two hundred ten trillion, two hundred four billion, two hundred forty-three million, forty thousand, two hundred forty-nine".