18053545205 has 8 divisors (see below), whose sum is σ = 21776505432. Its totient is φ = 14368002048.

The previous prime is 18053545171. The next prime is 18053545207. The reversal of 18053545205 is 50254535081.

It can be written as a sum of positive squares in 4 ways, for example, as 398161 + 18053147044 = 631^2 + 134362^2 .

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 18053545205 - 2³⁰ = 16979803381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18053545207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9353204 + ... + 9355133.

It is an arithmetic number, because the mean of its divisors is an integer number (2722063179).

Almost surely, 2^18053545205 is an apocalyptic number.

It is an amenable number.

18053545205 is a deficient number, since it is larger than the sum of its proper divisors (3722960227).

18053545205 is a wasteful number, since it uses less digits than its factorization.

18053545205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18708535.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 18053545205 in words is "eighteen billion, fifty-three million, five hundred forty-five thousand, two hundred five".