12677156823171 has 4 divisors (see below), whose sum is σ = 16902875764232. Its totient is φ = 8451437882112.

The previous prime is 12677156823113. The next prime is 12677156823179. The reversal of 12677156823171 is 17132865177621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12677156823171 - 2⁷ = 12677156823043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12677156823179) 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, 2112859470526 + ... + 2112859470531.

It is an arithmetic number, because the mean of its divisors is an integer number (4225718941058).

Almost surely, 2^{12677156823171} is an apocalyptic number.

12677156823171 is a deficient number, since it is larger than the sum of its proper divisors (4225718941061).

12677156823171 is an equidigital number, since it uses as much as digits as its factorization.

12677156823171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4225718941060.

The product of its digits is 5927040, while the sum is 57.

The spelling of 12677156823171 in words is "twelve trillion, six hundred seventy-seven billion, one hundred fifty-six million, eight hundred twenty-three thousand, one hundred seventy-one".