545221205305 has 32 divisors (see below), whose sum is σ = 751545020160. Its totient is φ = 371960709120.

The previous prime is 545221205297. The next prime is 545221205317. The reversal of 545221205305 is 503502122545.

It is not a de Polignac number, because 545221205305 - 2³ = 545221205297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23391417 + ... + 23414713.

It is an arithmetic number, because the mean of its divisors is an integer number (23485781880).

Almost surely, 2^545221205305 is an apocalyptic number.

It is an amenable number.

545221205305 is a deficient number, since it is larger than the sum of its proper divisors (206323814855).

545221205305 is a wasteful number, since it uses less digits than its factorization.

545221205305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26689.

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 545221205305 in words is "five hundred forty-five billion, two hundred twenty-one million, two hundred five thousand, three hundred five".