545221043205 has 16 divisors (see below), whose sum is σ = 876003690240. Its totient is φ = 289567882688.

The previous prime is 545221043161. The next prime is 545221043221. The reversal of 545221043205 is 502340122545.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 545221043205 - 2⁷ = 545221043077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76038402 + ... + 76045571.

It is an arithmetic number, because the mean of its divisors is an integer number (54750230640).

Almost surely, 2^545221043205 is an apocalyptic number.

It is an amenable number.

545221043205 is a deficient number, since it is larger than the sum of its proper divisors (330782647035).

545221043205 is a wasteful number, since it uses less digits than its factorization.

545221043205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152084220.

The product of its (nonzero) digits is 48000, while the sum is 33.

The spelling of 545221043205 in words is "five hundred forty-five billion, two hundred twenty-one million, forty-three thousand, two hundred five".