12175577677 has 2 divisors, whose sum is σ = 12175577678. Its totient is φ = 12175577676.

The previous prime is 12175577611. The next prime is 12175577683. The reversal of 12175577677 is 77677557121.

12175577677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8899846921 + 3275730756 = 94339^2 + 57234^2 .

It is an emirp because it is prime and its reverse (77677557121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12175577677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12175527677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6087788838 + 6087788839.

It is an arithmetic number, because the mean of its divisors is an integer number (6087788839).

Almost surely, 2^12175577677 is an apocalyptic number.

It is an amenable number.

12175577677 is a deficient number, since it is larger than the sum of its proper divisors (1).

12175577677 is an equidigital number, since it uses as much as digits as its factorization.

12175577677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5042100, while the sum is 55.

The spelling of 12175577677 in words is "twelve billion, one hundred seventy-five million, five hundred seventy-seven thousand, six hundred seventy-seven".