12689134446 has 8 divisors (see below), whose sum is σ = 25378268904. Its totient is φ = 4229711480.

The previous prime is 12689134421. The next prime is 12689134457. The reversal of 12689134446 is 64443198621.

It is a happy number.

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

12689134446 is an admirable number.

It is a super-2 number, since 2×12689134446² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12689134395 and 12689134404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057427865 + ... + 1057427876.

It is an arithmetic number, because the mean of its divisors is an integer number (3172283613).

Almost surely, 2^12689134446 is an apocalyptic number.

12689134446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12689134446 is a wasteful number, since it uses less digits than its factorization.

12689134446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114855746.

The product of its digits is 995328, while the sum is 48.

The spelling of 12689134446 in words is "twelve billion, six hundred eighty-nine million, one hundred thirty-four thousand, four hundred forty-six".