13047871685 has 8 divisors (see below), whose sum is σ = 15658081920. Its totient is φ = 10437873424.

The previous prime is 13047871663. The next prime is 13047871717. The reversal of 13047871685 is 58617874031.

13047871685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13047871685 - 2²⁴ = 13031094469 is a prime.

It is a congruent number.

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, 160976 + ... + 228054.

It is an arithmetic number, because the mean of its divisors is an integer number (1957260240).

Almost surely, 2^13047871685 is an apocalyptic number.

It is an amenable number.

13047871685 is a deficient number, since it is larger than the sum of its proper divisors (2610210235).

13047871685 is an equidigital number, since it uses as much as digits as its factorization.

13047871685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105987.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 13047871685 in words is "thirteen billion, forty-seven million, eight hundred seventy-one thousand, six hundred eighty-five".