12777889166 has 8 divisors (see below), whose sum is σ = 21904952880. Its totient is φ = 5476238208.

The previous prime is 12777889147. The next prime is 12777889183. The reversal of 12777889166 is 66198877721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12777889099 and 12777889108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456353171 + ... + 456353198.

It is an arithmetic number, because the mean of its divisors is an integer number (2738119110).

Almost surely, 2^12777889166 is an apocalyptic number.

12777889166 is a deficient number, since it is larger than the sum of its proper divisors (9127063714).

12777889166 is an equidigital number, since it uses as much as digits as its factorization.

12777889166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912706378.

The product of its digits is 14224896, while the sum is 62.

The spelling of 12777889166 in words is "twelve billion, seven hundred seventy-seven million, eight hundred eighty-nine thousand, one hundred sixty-six".