545205635321 has 2 divisors, whose sum is σ = 545205635322. Its totient is φ = 545205635320.

The previous prime is 545205635311. The next prime is 545205635339. The reversal of 545205635321 is 123536502545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 497679455296 + 47526180025 = 705464^2 + 218005^2 .

It is a cyclic number.

It is not a de Polignac number, because 545205635321 - 2¹⁸ = 545205373177 is a prime.

It is a super-3 number, since 3×545205635321³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (545205635311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272602817660 + 272602817661.

It is an arithmetic number, because the mean of its divisors is an integer number (272602817661).

Almost surely, 2^545205635321 is an apocalyptic number.

It is an amenable number.

545205635321 is a deficient number, since it is larger than the sum of its proper divisors (1).

545205635321 is an equidigital number, since it uses as much as digits as its factorization.

545205635321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540000, while the sum is 41.

The spelling of 545205635321 in words is "five hundred forty-five billion, two hundred five million, six hundred thirty-five thousand, three hundred twenty-one".