8122281291529 has 2 divisors, whose sum is σ = 8122281291530. Its totient is φ = 8122281291528.

The previous prime is 8122281291521. The next prime is 8122281291541. The reversal of 8122281291529 is 9251921822218.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7430656201929 + 691625089600 = 2725923^2 + 831640^2 .

It is a cyclic number.

It is not a de Polignac number, because 8122281291529 - 2³ = 8122281291521 is a prime.

It is not a weakly prime, because it can be changed into another prime (8122281291521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4061140645764 + 4061140645765.

It is an arithmetic number, because the mean of its divisors is an integer number (4061140645765).

Almost surely, 2^{8122281291529} is an apocalyptic number.

It is an amenable number.

8122281291529 is a deficient number, since it is larger than the sum of its proper divisors (1).

8122281291529 is an equidigital number, since it uses as much as digits as its factorization.

8122281291529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 52.

The spelling of 8122281291529 in words is "eight trillion, one hundred twenty-two billion, two hundred eighty-one million, two hundred ninety-one thousand, five hundred twenty-nine".