8012656109 has 2 divisors, whose sum is σ = 8012656110. Its totient is φ = 8012656108.

The previous prime is 8012656061. The next prime is 8012656139. The reversal of 8012656109 is 9016562108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7996294084 + 16362025 = 89422^2 + 4045^2 .

It is a cyclic number.

It is not a de Polignac number, because 8012656109 - 2²⁰ = 8011607533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8012656139) 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, 4006328054 + 4006328055.

It is an arithmetic number, because the mean of its divisors is an integer number (4006328055).

Almost surely, 2^8012656109 is an apocalyptic number.

It is an amenable number.

8012656109 is a deficient number, since it is larger than the sum of its proper divisors (1).

8012656109 is an equidigital number, since it uses as much as digits as its factorization.

8012656109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 8012656109 is about 89513.4409404532. The cubic root of 8012656109 is about 2001.0541200678.

The spelling of 8012656109 in words is "eight billion, twelve million, six hundred fifty-six thousand, one hundred nine".