853822240909 has 4 divisors (see below), whose sum is σ = 931442444640. Its totient is φ = 776202037180.

The previous prime is 853822240907. The next prime is 853822240993. The reversal of 853822240909 is 909042228358.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 853822240909 - 2¹ = 853822240907 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 (853822240907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38810101849 + ... + 38810101870.

It is an arithmetic number, because the mean of its divisors is an integer number (232860611160).

Almost surely, 2^853822240909 is an apocalyptic number.

It is an amenable number.

853822240909 is a deficient number, since it is larger than the sum of its proper divisors (77620203731).

853822240909 is a wasteful number, since it uses less digits than its factorization.

853822240909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77620203730.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 853822240909 in words is "eight hundred fifty-three billion, eight hundred twenty-two million, two hundred forty thousand, nine hundred nine".