13271071985 has 8 divisors (see below), whose sum is σ = 15941265576. Its totient is φ = 10606204800.

The previous prime is 13271071867. The next prime is 13271072033. The reversal of 13271071985 is 58917017231.

13271071985 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 2925944464 + 10345127521 = 54092^2 + 101711^2 .

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

It is not a de Polignac number, because 13271071985 - 2⁸ = 13271071729 is a prime.

It is a super-2 number, since 2×13271071985² (a number of 21 digits) contains 22 as substring.

It is a Duffinian 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, 1326116 + ... + 1336085.

It is an arithmetic number, because the mean of its divisors is an integer number (1992658197).

Almost surely, 2^13271071985 is an apocalyptic number.

It is an amenable number.

13271071985 is a deficient number, since it is larger than the sum of its proper divisors (2670193591).

13271071985 is an equidigital number, since it uses as much as digits as its factorization.

13271071985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663203.

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 13271071985 in words is "thirteen billion, two hundred seventy-one million, seventy-one thousand, nine hundred eighty-five".