13643626826 has 16 divisors (see below), whose sum is σ = 20989168200. Its totient is φ = 6647627520.

The previous prime is 13643626819. The next prime is 13643626847. The reversal of 13643626826 is 62862634631.

13643626826 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6746158225 + 6897468601 = 82135^2 + 83051^2 .

It is a super-2 number, since 2×13643626826² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26801 + ... + 167348.

Almost surely, 2^13643626826 is an apocalyptic number.

13643626826 is a deficient number, since it is larger than the sum of its proper divisors (7345541374).

13643626826 is a wasteful number, since it uses less digits than its factorization.

13643626826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195049.

The product of its digits is 1492992, while the sum is 47.

The spelling of 13643626826 in words is "thirteen billion, six hundred forty-three million, six hundred twenty-six thousand, eight hundred twenty-six".