8124277321 has 2 divisors, whose sum is σ = 8124277322. Its totient is φ = 8124277320.

The previous prime is 8124277247. The next prime is 8124277361. The reversal of 8124277321 is 1237724218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7888992400 + 235284921 = 88820^2 + 15339^2 .

It is a cyclic number.

It is not a de Polignac number, because 8124277321 - 2⁷ = 8124277193 is a prime.

It is not a weakly prime, because it can be changed into another prime (8124277361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4062138660 + 4062138661.

It is an arithmetic number, because the mean of its divisors is an integer number (4062138661).

Almost surely, 2^8124277321 is an apocalyptic number.

It is an amenable number.

8124277321 is a deficient number, since it is larger than the sum of its proper divisors (1).

8124277321 is an equidigital number, since it uses as much as digits as its factorization.

8124277321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 37.

The square root of 8124277321 is about 90134.7730956261. The cubic root of 8124277321 is about 2010.3032735463.

The spelling of 8124277321 in words is "eight billion, one hundred twenty-four million, two hundred seventy-seven thousand, three hundred twenty-one".