12689507347909 has 8 divisors (see below), whose sum is σ = 14531125714560. Its totient is φ = 10855096881936.

The previous prime is 12689507347901. The next prime is 12689507347921. The reversal of 12689507347909 is 90974370598621.

It is a happy number.

12689507347909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12689507347909 - 2³ = 12689507347901 is a prime.

It is a super-2 number, since 2×12689507347909² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12689507347901) 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, 1801971394 + ... + 1801978435.

It is an arithmetic number, because the mean of its divisors is an integer number (1816390714320).

It is a 2-persistent number, because it is pandigital, and so is 2⋅12689507347909 = 25379014695818, but 3⋅12689507347909 = 38068522043727 is not.

Almost surely, 2^{12689507347909} is an apocalyptic number.

It is an amenable number.

12689507347909 is a deficient number, since it is larger than the sum of its proper divisors (1841618366651).

12689507347909 is an equidigital number, since it uses as much as digits as its factorization.

12689507347909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3603950339.

The product of its (nonzero) digits is 205752960, while the sum is 70.

The spelling of 12689507347909 in words is "twelve trillion, six hundred eighty-nine billion, five hundred seven million, three hundred forty-seven thousand, nine hundred nine".