210247053449 has 2 divisors, whose sum is σ = 210247053450. Its totient is φ = 210247053448.

The previous prime is 210247053439. The next prime is 210247053481. The reversal of 210247053449 is 944350742012.

210247053449 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., 195045889600 + 15201163849 = 441640^2 + 123293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210247053449 is a prime.

It is not a weakly prime, because it can be changed into another prime (210247053439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105123526724 + 105123526725.

It is an arithmetic number, because the mean of its divisors is an integer number (105123526725).

Almost surely, 2^210247053449 is an apocalyptic number.

It is an amenable number.

210247053449 is a deficient number, since it is larger than the sum of its proper divisors (1).

210247053449 is an equidigital number, since it uses as much as digits as its factorization.

210247053449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 210247053449 in words is "two hundred ten billion, two hundred forty-seven million, fifty-three thousand, four hundred forty-nine".