210927143335561 has 9 divisors (see below), whose sum is σ = 212335470284679. Its totient is φ = 209528096337000.

The previous prime is 210927143335553. The next prime is 210927143335577. The reversal of 210927143335561 is 165533341729012.

The square root of 210927143335561 is 14523331.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 210217202279161 + 709941056400 = 14498869^2 + 842580^2 .

It is not a de Polignac number, because 210927143335561 - 2³ = 210927143335553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210927143335499 and 210927143335508.

It is not an unprimeable number, because it can be changed into a prime (210927143335511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2192974891 + ... + 2193071071.

It is an arithmetic number, because the mean of its divisors is an integer number (23592830031631).

Almost surely, 2^{210927143335561} is an apocalyptic number.

210927143335561 is the 14523331-st square number.

210927143335561 is the 7261666-th centered octagonal number.

It is an amenable number.

210927143335561 is a deficient number, since it is larger than the sum of its proper divisors (1408326949118).

210927143335561 is an frugal number, since it uses more digits than its factorization.

210927143335561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192664 (or 96332 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 52.

The spelling of 210927143335561 in words is "two hundred ten trillion, nine hundred twenty-seven billion, one hundred forty-three million, three hundred thirty-five thousand, five hundred sixty-one".