8112121161619 has 2 divisors, whose sum is σ = 8112121161620. Its totient is φ = 8112121161618.

The previous prime is 8112121161611. The next prime is 8112121161643. The reversal of 8112121161619 is 9161611212118.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8112121161619 - 2³ = 8112121161611 is a prime.

It is a super-2 number, since 2×8112121161619² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8112121161611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4056060580809 + 4056060580810.

It is an arithmetic number, because the mean of its divisors is an integer number (4056060580810).

Almost surely, 2^{8112121161619} is an apocalyptic number.

8112121161619 is a deficient number, since it is larger than the sum of its proper divisors (1).

8112121161619 is an equidigital number, since it uses as much as digits as its factorization.

8112121161619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 40.

The spelling of 8112121161619 in words is "eight trillion, one hundred twelve billion, one hundred twenty-one million, one hundred sixty-one thousand, six hundred nineteen".