8166445472 has 24 divisors (see below), whose sum is σ = 16632094500. Its totient is φ = 3942421504.

The previous prime is 8166445459. The next prime is 8166445487. The reversal of 8166445472 is 2745446618.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8064758416 + 101687056 = 89804^2 + 10084^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4399097 + ... + 4400952.

Almost surely, 2^8166445472 is an apocalyptic number.

It is an amenable number.

8166445472 is an abundant number, since it is smaller than the sum of its proper divisors (8465649028).

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

8166445472 is a wasteful number, since it uses less digits than its factorization.

8166445472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8800088 (or 8800080 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 47.

The square root of 8166445472 is about 90368.3875699904. The cubic root of 8166445472 is about 2013.7753579222.

The spelling of 8166445472 in words is "eight billion, one hundred sixty-six million, four hundred forty-five thousand, four hundred seventy-two".