13471805861 has 4 divisors (see below), whose sum is σ = 13481117472. Its totient is φ = 13462494252.

The previous prime is 13471805833. The next prime is 13471805881. The reversal of 13471805861 is 16850817431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13471805861 - 2¹⁰ = 13471804837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13471805881) 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, 4653635 + ... + 4656528.

It is an arithmetic number, because the mean of its divisors is an integer number (3370279368).

Almost surely, 2^13471805861 is an apocalyptic number.

It is an amenable number.

13471805861 is a deficient number, since it is larger than the sum of its proper divisors (9311611).

13471805861 is an equidigital number, since it uses as much as digits as its factorization.

13471805861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9311610.

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 13471805861 in words is "thirteen billion, four hundred seventy-one million, eight hundred five thousand, eight hundred sixty-one".