7281168255 has 24 divisors (see below), whose sum is σ = 13363086672. Its totient is φ = 3654860544.

The previous prime is 7281168253. The next prime is 7281168283. The reversal of 7281168255 is 5528611827.

It is not a de Polignac number, because 7281168255 - 2¹ = 7281168253 is a prime.

It is a super-2 number, since 2×7281168255² (a number of 21 digits) contains 22 as substring.

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 7281168255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7281168253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4758169 + ... + 4759698.

It is an arithmetic number, because the mean of its divisors is an integer number (556795278).

Almost surely, 2^7281168255 is an apocalyptic number.

7281168255 is a deficient number, since it is larger than the sum of its proper divisors (6081918417).

7281168255 is a wasteful number, since it uses less digits than its factorization.

7281168255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9517895 (or 9517892 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 7281168255 is about 85329.7618360675. The cubic root of 7281168255 is about 1938.2078833001.

The spelling of 7281168255 in words is "seven billion, two hundred eighty-one million, one hundred sixty-eight thousand, two hundred fifty-five".