210321504145 has 8 divisors (see below), whose sum is σ = 267232028904. Its totient is φ = 158359720704.

The previous prime is 210321504143. The next prime is 210321504161. The reversal of 210321504145 is 541405123012.

210321504145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 86866951824 + 123454552321 = 294732^2 + 351361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210321504145 - 2¹ = 210321504143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210321504143) 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 in 7 ways as a sum of consecutive naturals, for example, 1237185234 + ... + 1237185403.

It is an arithmetic number, because the mean of its divisors is an integer number (33404003613).

Almost surely, 2^210321504145 is an apocalyptic number.

It is an amenable number.

210321504145 is a deficient number, since it is larger than the sum of its proper divisors (56910524759).

210321504145 is a wasteful number, since it uses less digits than its factorization.

210321504145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474370659.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 210321504145 its reverse (541405123012), we get a palindrome (751726627157).

The spelling of 210321504145 in words is "two hundred ten billion, three hundred twenty-one million, five hundred four thousand, one hundred forty-five".