12639476827 has 8 divisors (see below), whose sum is σ = 12772021680. Its totient is φ = 12507233760.

The previous prime is 12639476821. The next prime is 12639476831. The reversal of 12639476827 is 72867493621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12639476827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12639476821) 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, 9252 + ... + 159262.

It is an arithmetic number, because the mean of its divisors is an integer number (1596502710).

Almost surely, 2^12639476827 is an apocalyptic number.

12639476827 is a deficient number, since it is larger than the sum of its proper divisors (132544853).

12639476827 is a wasteful number, since it uses less digits than its factorization.

12639476827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150893.

The product of its digits is 6096384, while the sum is 55.

The spelling of 12639476827 in words is "twelve billion, six hundred thirty-nine million, four hundred seventy-six thousand, eight hundred twenty-seven".