8881292921909 has 2 divisors, whose sum is σ = 8881292921910. Its totient is φ = 8881292921908.

The previous prime is 8881292921863. The next prime is 8881292921911. The reversal of 8881292921909 is 9091292921888.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8188439787025 + 692853134884 = 2861545^2 + 832378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8881292921909 is a prime.

Together with 8881292921911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8881292921959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4440646460954 + 4440646460955.

It is an arithmetic number, because the mean of its divisors is an integer number (4440646460955).

Almost surely, 2^{8881292921909} is an apocalyptic number.

It is an amenable number.

8881292921909 is a deficient number, since it is larger than the sum of its proper divisors (1).

8881292921909 is an equidigital number, since it uses as much as digits as its factorization.

8881292921909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26873856, while the sum is 68.

The spelling of 8881292921909 in words is "eight trillion, eight hundred eighty-one billion, two hundred ninety-two million, nine hundred twenty-one thousand, nine hundred nine".