5205845109 has 8 divisors (see below), whose sum is σ = 6963304192. Its totient is φ = 3459474720.

The previous prime is 5205845107. The next prime is 5205845147. The reversal of 5205845109 is 9015485025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5205845109 - 2¹ = 5205845107 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 (5205845107) 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, 2771077 + ... + 2772954.

It is an arithmetic number, because the mean of its divisors is an integer number (870413024).

Almost surely, 2^5205845109 is an apocalyptic number.

It is an amenable number.

5205845109 is a deficient number, since it is larger than the sum of its proper divisors (1757459083).

5205845109 is a wasteful number, since it uses less digits than its factorization.

5205845109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544347.

The product of its (nonzero) digits is 72000, while the sum is 39.

The square root of 5205845109 is about 72151.5426654205. The cubic root of 5205845109 is about 1733.1271037637.

The spelling of 5205845109 in words is "five billion, two hundred five million, eight hundred forty-five thousand, one hundred nine".