12108845390177 has 2 divisors, whose sum is σ = 12108845390178. Its totient is φ = 12108845390176.

The previous prime is 12108845390171. The next prime is 12108845390197. The reversal of 12108845390177 is 77109354880121.

12108845390177 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11359164752896 + 749680637281 = 3370336^2 + 865841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12108845390177 is a prime.

It is a super-3 number, since 3×12108845390177³ (a number of 40 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (12108845390171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6054422695088 + 6054422695089.

It is an arithmetic number, because the mean of its divisors is an integer number (6054422695089).

Almost surely, 2^{12108845390177} is an apocalyptic number.

It is an amenable number.

12108845390177 is a deficient number, since it is larger than the sum of its proper divisors (1).

12108845390177 is an equidigital number, since it uses as much as digits as its factorization.

12108845390177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 12108845390177 in words is "twelve trillion, one hundred eight billion, eight hundred forty-five million, three hundred ninety thousand, one hundred seventy-seven".