12677617217 has 4 divisors (see below), whose sum is σ = 12707874480. Its totient is φ = 12647359956.

The previous prime is 12677617163. The next prime is 12677617237. The reversal of 12677617217 is 71271677621.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71271677621 = 2711 ⋅26289811.

It is a cyclic number.

It is not a de Polignac number, because 12677617217 - 2⁸ = 12677616961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12677617237) 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, 15128003 + ... + 15128840.

It is an arithmetic number, because the mean of its divisors is an integer number (3176968620).

Almost surely, 2^12677617217 is an apocalyptic number.

It is an amenable number.

12677617217 is a deficient number, since it is larger than the sum of its proper divisors (30257263).

12677617217 is an equidigital number, since it uses as much as digits as its factorization.

12677617217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30257262.

The product of its digits is 345744, while the sum is 47.

The spelling of 12677617217 in words is "twelve billion, six hundred seventy-seven million, six hundred seventeen thousand, two hundred seventeen".