12689087859 has 16 divisors (see below), whose sum is σ = 21484170240. Its totient is φ = 7250907240.

The previous prime is 12689087843. The next prime is 12689087899. The reversal of 12689087859 is 95878098621.

It is a happy number.

It is not a de Polignac number, because 12689087859 - 2⁴ = 12689087843 is a prime.

It is a super-3 number, since 3×12689087859³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 12689087796 and 12689087805.

It is not an unprimeable number, because it can be changed into a prime (12689087819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33568827 + ... + 33569204.

It is an arithmetic number, because the mean of its divisors is an integer number (1342760640).

Almost surely, 2^12689087859 is an apocalyptic number.

12689087859 is a deficient number, since it is larger than the sum of its proper divisors (8795082381).

12689087859 is an equidigital number, since it uses as much as digits as its factorization.

12689087859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67138047 (or 67138041 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 63.

The spelling of 12689087859 in words is "twelve billion, six hundred eighty-nine million, eighty-seven thousand, eight hundred fifty-nine".