845564465547 has 12 divisors (see below), whose sum is σ = 1221450031464. Its totient is φ = 563673119040.

The previous prime is 845564465513. The next prime is 845564465569. The reversal of 845564465547 is 745564465548.

845564465547 is a `hidden beast` number, since 8 + 4 + 5 + 564 + 4 + 65 + 5 + 4 + 7 = 666.

It is not a de Polignac number, because 845564465547 - 2²⁷ = 845430247819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (845564465597) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2896729 + ... + 3175242.

It is an arithmetic number, because the mean of its divisors is an integer number (101787502622).

Almost surely, 2^845564465547 is an apocalyptic number.

845564465547 is a deficient number, since it is larger than the sum of its proper divisors (375885565917).

845564465547 is a wasteful number, since it uses less digits than its factorization.

845564465547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6087450 (or 6087447 counting only the distinct ones).

The product of its digits is 322560000, while the sum is 63.

Subtracting from 845564465547 its reverse (745564465548), we obtain a palindrome (99999999999).

The spelling of 845564465547 in words is "eight hundred forty-five billion, five hundred sixty-four million, four hundred sixty-five thousand, five hundred forty-seven".