8431773345 has 24 divisors (see below), whose sum is σ = 15119044200. Its totient is φ = 4341878016.

The previous prime is 8431773313. The next prime is 8431773377. The reversal of 8431773345 is 5433771348.

It is an interprime number because it is at equal distance from previous prime (8431773313) and next prime (8431773377).

It can be written as a sum of positive squares in 4 ways, for example, as 234824976 + 8196948369 = 15324^2 + 90537^2 .

It is not a de Polignac number, because 8431773345 - 2⁵ = 8431773313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8431773345.

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 23 ways as a sum of consecutive naturals, for example, 3229260 + ... + 3231869.

It is an arithmetic number, because the mean of its divisors is an integer number (629960175).

Almost surely, 2^8431773345 is an apocalyptic number.

It is an amenable number.

8431773345 is a deficient number, since it is larger than the sum of its proper divisors (6687270855).

8431773345 is a wasteful number, since it uses less digits than its factorization.

8431773345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6461169 (or 6461166 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 8431773345 is about 91824.6881018389. The cubic root of 8431773345 is about 2035.3525294444.

The spelling of 8431773345 in words is "eight billion, four hundred thirty-one million, seven hundred seventy-three thousand, three hundred forty-five".