210345001745 has 4 divisors (see below), whose sum is σ = 252414002100. Its totient is φ = 168276001392.

The previous prime is 210345001723. The next prime is 210345001751. The reversal of 210345001745 is 547100543012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25093094464 + 185251907281 = 158408^2 + 430409^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210345001745 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21034500170 + ... + 21034500179.

It is an arithmetic number, because the mean of its divisors is an integer number (63103500525).

Almost surely, 2^210345001745 is an apocalyptic number.

It is an amenable number.

210345001745 is a deficient number, since it is larger than the sum of its proper divisors (42069000355).

210345001745 is an equidigital number, since it uses as much as digits as its factorization.

210345001745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42069000354.

The product of its (nonzero) digits is 16800, while the sum is 32.

Adding to 210345001745 its reverse (547100543012), we get a palindrome (757445544757).

The spelling of 210345001745 in words is "two hundred ten billion, three hundred forty-five million, one thousand, seven hundred forty-five".