12766345709 has 8 divisors (see below), whose sum is σ = 13817462400. Its totient is φ = 11725099056.

The previous prime is 12766345703. The next prime is 12766345741. The reversal of 12766345709 is 90754366721.

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 12766345709 - 2²⁸ = 12497910253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12766345703) 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, 2464817 + ... + 2469990.

It is an arithmetic number, because the mean of its divisors is an integer number (1727182800).

Almost surely, 2^12766345709 is an apocalyptic number.

It is an amenable number.

12766345709 is a deficient number, since it is larger than the sum of its proper divisors (1051116691).

12766345709 is a wasteful number, since it uses less digits than its factorization.

12766345709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4935019.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 12766345709 in words is "twelve billion, seven hundred sixty-six million, three hundred forty-five thousand, seven hundred nine".