8348386686121 has 2 divisors, whose sum is σ = 8348386686122. Its totient is φ = 8348386686120.

The previous prime is 8348386686119. The next prime is 8348386686161. The reversal of 8348386686121 is 1216866838438.

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., 7099213869225 + 1249172816896 = 2664435^2 + 1117664^2 .

It is a cyclic number.

It is not a de Polignac number, because 8348386686121 - 2¹ = 8348386686119 is a prime.

It is a super-2 number, since 2×8348386686121² (a number of 27 digits) contains 22 as substring.

Together with 8348386686119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8348386686161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4174193343060 + 4174193343061.

It is an arithmetic number, because the mean of its divisors is an integer number (4174193343061).

Almost surely, 2^{8348386686121} is an apocalyptic number.

It is an amenable number.

8348386686121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8348386686121 is an equidigital number, since it uses as much as digits as its factorization.

8348386686121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63700992, while the sum is 64.

The spelling of 8348386686121 in words is "eight trillion, three hundred forty-eight billion, three hundred eighty-six million, six hundred eighty-six thousand, one hundred twenty-one".