8173345561 has 8 divisors (see below), whose sum is σ = 8655828480. Its totient is φ = 7691051328.

The previous prime is 8173345541. The next prime is 8173345567. The reversal of 8173345561 is 1655433718.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8173345561 - 2⁹ = 8173345049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8173345567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47460 + ... + 136378.

It is an arithmetic number, because the mean of its divisors is an integer number (1081978560).

Almost surely, 2^8173345561 is an apocalyptic number.

It is an amenable number.

8173345561 is a deficient number, since it is larger than the sum of its proper divisors (482482919).

8173345561 is a wasteful number, since it uses less digits than its factorization.

8173345561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94343.

The product of its digits is 302400, while the sum is 43.

The square root of 8173345561 is about 90406.5570686109. The cubic root of 8173345561 is about 2014.3423658317.

The spelling of 8173345561 in words is "eight billion, one hundred seventy-three million, three hundred forty-five thousand, five hundred sixty-one".