845353053569 has 4 divisors (see below), whose sum is σ = 846667755696. Its totient is φ = 844038351444.

The previous prime is 845353053551. The next prime is 845353053581. The reversal of 845353053569 is 965350353548.

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 845353053569 - 2¹⁶ = 845352988033 is a prime.

It is a super-2 number, since 2×845353053569² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (845353053539) 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, 657350099 + ... + 657351384.

It is an arithmetic number, because the mean of its divisors is an integer number (211666938924).

Almost surely, 2^845353053569 is an apocalyptic number.

It is an amenable number.

845353053569 is a deficient number, since it is larger than the sum of its proper divisors (1314702127).

845353053569 is a wasteful number, since it uses less digits than its factorization.

845353053569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314702126.

The product of its (nonzero) digits is 29160000, while the sum is 56.

The spelling of 845353053569 in words is "eight hundred forty-five billion, three hundred fifty-three million, fifty-three thousand, five hundred sixty-nine".