13556811886 has 16 divisors (see below), whose sum is σ = 20435495184. Its totient is φ = 6745017664.

The previous prime is 13556811839. The next prime is 13556811893. The reversal of 13556811886 is 68811865531.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799185 + ... + 815971.

It is an arithmetic number, because the mean of its divisors is an integer number (1277218449).

Almost surely, 2^13556811886 is an apocalyptic number.

13556811886 is a deficient number, since it is larger than the sum of its proper divisors (6878683298).

13556811886 is a wasteful number, since it uses less digits than its factorization.

13556811886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18755.

The product of its digits is 1382400, while the sum is 52.

The spelling of 13556811886 in words is "thirteen billion, five hundred fifty-six million, eight hundred eleven thousand, eight hundred eighty-six".