12108928278277 has 2 divisors, whose sum is σ = 12108928278278. Its totient is φ = 12108928278276.

The previous prime is 12108928278241. The next prime is 12108928278283. The reversal of 12108928278277 is 77287282980121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11136730306276 + 972197972001 = 3337174^2 + 986001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12108928278277 is a prime.

It is a super-2 number, since 2×12108928278277² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12100928278277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6054464139138 + 6054464139139.

It is an arithmetic number, because the mean of its divisors is an integer number (6054464139139).

Almost surely, 2^{12108928278277} is an apocalyptic number.

It is an amenable number.

12108928278277 is a deficient number, since it is larger than the sum of its proper divisors (1).

12108928278277 is an equidigital number, since it uses as much as digits as its factorization.

12108928278277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25288704, while the sum is 64.

The spelling of 12108928278277 in words is "twelve trillion, one hundred eight billion, nine hundred twenty-eight million, two hundred seventy-eight thousand, two hundred seventy-seven".