13681986811 has 4 divisors (see below), whose sum is σ = 14402091400. Its totient is φ = 12961882224.

The previous prime is 13681986797. The next prime is 13681986833. The reversal of 13681986811 is 11868918631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13681986811 - 2⁷ = 13681986683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13681986211) by changing a digit.

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, 360052266 + ... + 360052303.

It is an arithmetic number, because the mean of its divisors is an integer number (3600522850).

Almost surely, 2^13681986811 is an apocalyptic number.

13681986811 is a deficient number, since it is larger than the sum of its proper divisors (720104589).

13681986811 is an equidigital number, since it uses as much as digits as its factorization.

13681986811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720104588.

The product of its digits is 497664, while the sum is 52.

The spelling of 13681986811 in words is "thirteen billion, six hundred eighty-one million, nine hundred eighty-six thousand, eight hundred eleven".