8122677281 has 4 divisors (see below), whose sum is σ = 8135842692. Its totient is φ = 8109511872.

The previous prime is 8122677259. The next prime is 8122677301. The reversal of 8122677281 is 1827762218.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1827762218 = 2 ⋅913881109.

It can be written as a sum of positive squares in 2 ways, for example, as 3795668881 + 4327008400 = 61609^2 + 65780^2 .

It is a cyclic number.

It is not a de Polignac number, because 8122677281 - 2¹⁸ = 8122415137 is a prime.

It is a super-2 number, since 2×8122677281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8122677581) by changing a digit.

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, 6581780 + ... + 6583013.

It is an arithmetic number, because the mean of its divisors is an integer number (2033960673).

Almost surely, 2^8122677281 is an apocalyptic number.

It is an amenable number.

8122677281 is a deficient number, since it is larger than the sum of its proper divisors (13165411).

8122677281 is a wasteful number, since it uses less digits than its factorization.

8122677281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13165410.

The product of its digits is 150528, while the sum is 44.

The square root of 8122677281 is about 90125.8968388110. The cubic root of 8122677281 is about 2010.1712914755.

The spelling of 8122677281 in words is "eight billion, one hundred twenty-two million, six hundred seventy-seven thousand, two hundred eighty-one".