12771356609 has 8 divisors (see below), whose sum is σ = 13933211328. Its totient is φ = 11609638960.

The previous prime is 12771356593. The next prime is 12771356617. The reversal of 12771356609 is 90665317721.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12771356609 - 2⁴ = 12771356593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12771356209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318524 + ... + 356370.

It is an arithmetic number, because the mean of its divisors is an integer number (1741651416).

Almost surely, 2^12771356609 is an apocalyptic number.

It is an amenable number.

12771356609 is a deficient number, since it is larger than the sum of its proper divisors (1161854719).

12771356609 is a wasteful number, since it uses less digits than its factorization.

12771356609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68535.

The product of its (nonzero) digits is 476280, while the sum is 47.

The spelling of 12771356609 in words is "twelve billion, seven hundred seventy-one million, three hundred fifty-six thousand, six hundred nine".