12689556862 has 8 divisors (see below), whose sum is σ = 19046097000. Its totient is φ = 6340857864.

The previous prime is 12689556829. The next prime is 12689556953. The reversal of 12689556862 is 26865598621.

It is a happy number.

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

It is a super-2 number, since 2×12689556862² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12689556797 and 12689556806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1956237 + ... + 1962712.

It is an arithmetic number, because the mean of its divisors is an integer number (2380762125).

Almost surely, 2^12689556862 is an apocalyptic number.

12689556862 is a deficient number, since it is larger than the sum of its proper divisors (6356540138).

12689556862 is a wasteful number, since it uses less digits than its factorization.

12689556862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920570.

The product of its digits is 12441600, while the sum is 58.

The spelling of 12689556862 in words is "twelve billion, six hundred eighty-nine million, five hundred fifty-six thousand, eight hundred sixty-two".