8166322006523 has 2 divisors, whose sum is σ = 8166322006524. Its totient is φ = 8166322006522.

The previous prime is 8166322006499. The next prime is 8166322006553. The reversal of 8166322006523 is 3256002236618.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8166322006523 - 2²⁴ = 8166305229307 is a prime.

It is a super-2 number, since 2×8166322006523² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8166322006553) 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, 4083161003261 + 4083161003262.

It is an arithmetic number, because the mean of its divisors is an integer number (4083161003262).

Almost surely, 2^{8166322006523} is an apocalyptic number.

8166322006523 is a deficient number, since it is larger than the sum of its proper divisors (1).

8166322006523 is an equidigital number, since it uses as much as digits as its factorization.

8166322006523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 8166322006523 in words is "eight trillion, one hundred sixty-six billion, three hundred twenty-two million, six thousand, five hundred twenty-three".