845574475548 has 144 divisors (see below), whose sum is σ = 2249637667200. Its totient is φ = 245080753920.

The previous prime is 845574475477. The next prime is 845574475591.

845574475548 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 10622118 + ... + 10701426.

It is an arithmetic number, because the mean of its divisors is an integer number (15622483800).

Almost surely, 2^845574475548 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 845574475548, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124818833600).

845574475548 is an abundant number, since it is smaller than the sum of its proper divisors (1404063191652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

845574475548 is a wasteful number, since it uses less digits than its factorization.

845574475548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79460 (or 79421 counting only the distinct ones).

The product of its digits is 501760000, while the sum is 66.

The spelling of 845574475548 in words is "eight hundred forty-five billion, five hundred seventy-four million, four hundred seventy-five thousand, five hundred forty-eight".