845983600009 has 4 divisors (see below), whose sum is σ = 895747341204. Its totient is φ = 796219858816.

The previous prime is 845983599889. The next prime is 845983600037. The reversal of 845983600009 is 900006389548.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 466215840000 + 379767760009 = 682800^2 + 616253^2 .

It is a cyclic number.

It is not a de Polignac number, because 845983600009 - 2⁹ = 845983599497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (845983300009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24881870572 + ... + 24881870605.

It is an arithmetic number, because the mean of its divisors is an integer number (223936835301).

Almost surely, 2^845983600009 is an apocalyptic number.

It is an amenable number.

845983600009 is a deficient number, since it is larger than the sum of its proper divisors (49763741195).

845983600009 is a wasteful number, since it uses less digits than its factorization.

845983600009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49763741194.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 845983600009 in words is "eight hundred forty-five billion, nine hundred eighty-three million, six hundred thousand, nine".