8128273847 has 4 divisors (see below), whose sum is σ = 8128457880. Its totient is φ = 8128089816.

The previous prime is 8128273837. The next prime is 8128273861. The reversal of 8128273847 is 7483728218.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7483728218 = 2 ⋅3741864109.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8128273847 is a prime.

It is a deceptive number, since it divides R_8128273846.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8128273795 and 8128273804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8128273817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18404 + ... + 128822.

It is an arithmetic number, because the mean of its divisors is an integer number (2032114470).

Almost surely, 2^8128273847 is an apocalyptic number.

8128273847 is the 73613-rd pentagonal number.

8128273847 is a deficient number, since it is larger than the sum of its proper divisors (184033).

8128273847 is a wasteful number, since it uses less digits than its factorization.

8128273847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184032.

The product of its digits is 1204224, while the sum is 50.

The square root of 8128273847 is about 90156.9400933727. The cubic root of 8128273847 is about 2010.6328582357.

The spelling of 8128273847 in words is "eight billion, one hundred twenty-eight million, two hundred seventy-three thousand, eight hundred forty-seven".