8227808758649 has 2 divisors, whose sum is σ = 8227808758650. Its totient is φ = 8227808758648.

The previous prime is 8227808758597. The next prime is 8227808758669. The reversal of 8227808758649 is 9468578087228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6638645974249 + 1589162784400 = 2576557^2 + 1260620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8227808758649 is a prime.

It is not a weakly prime, because it can be changed into another prime (8227808758669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4113904379324 + 4113904379325.

It is an arithmetic number, because the mean of its divisors is an integer number (4113904379325).

Almost surely, 2^{8227808758649} is an apocalyptic number.

It is an amenable number.

8227808758649 is a deficient number, since it is larger than the sum of its proper divisors (1).

8227808758649 is an equidigital number, since it uses as much as digits as its factorization.

8227808758649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 867041280, while the sum is 74.

The spelling of 8227808758649 in words is "eight trillion, two hundred twenty-seven billion, eight hundred eight million, seven hundred fifty-eight thousand, six hundred forty-nine".