210242513353 has 2 divisors, whose sum is σ = 210242513354. Its totient is φ = 210242513352.

The previous prime is 210242513333. The next prime is 210242513357. The reversal of 210242513353 is 353315242012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199658836224 + 10583677129 = 446832^2 + 102877^2 .

It is a cyclic number.

It is not a de Polignac number, because 210242513353 - 2⁹ = 210242512841 is a prime.

It is not a weakly prime, because it can be changed into another prime (210242513357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105121256676 + 105121256677.

It is an arithmetic number, because the mean of its divisors is an integer number (105121256677).

Almost surely, 2^210242513353 is an apocalyptic number.

It is an amenable number.

210242513353 is a deficient number, since it is larger than the sum of its proper divisors (1).

210242513353 is an equidigital number, since it uses as much as digits as its factorization.

210242513353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 210242513353 its reverse (353315242012), we get a palindrome (563557755365).

The spelling of 210242513353 in words is "two hundred ten billion, two hundred forty-two million, five hundred thirteen thousand, three hundred fifty-three".