12677767554129 has 4 divisors (see below), whose sum is σ = 16903690072176. Its totient is φ = 8451845036084.

The previous prime is 12677767554121. The next prime is 12677767554161. The reversal of 12677767554129 is 92145576777621.

12677767554129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12677767554129 - 2³ = 12677767554121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12677767554121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2112961259019 + ... + 2112961259024.

It is an arithmetic number, because the mean of its divisors is an integer number (4225922518044).

Almost surely, 2^{12677767554129} is an apocalyptic number.

It is an amenable number.

12677767554129 is a deficient number, since it is larger than the sum of its proper divisors (4225922518047).

12677767554129 is an equidigital number, since it uses as much as digits as its factorization.

12677767554129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225922518046.

The product of its digits is 311169600, while the sum is 69.

The spelling of 12677767554129 in words is "twelve trillion, six hundred seventy-seven billion, seven hundred sixty-seven million, five hundred fifty-four thousand, one hundred twenty-nine".