14161531605209 has 4 divisors (see below), whose sum is σ = 14355525188916. Its totient is φ = 13967538021504.

The previous prime is 14161531605191. The next prime is 14161531605211. The reversal of 14161531605209 is 90250613516141.

It is a happy number.

14161531605209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6412685099584 + 7748846505625 = 2532328^2 + 2783675^2 .

It is a cyclic number.

It is not a de Polignac number, because 14161531605209 - 2³² = 14157236637913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14161531605209.

It is not an unprimeable number, because it can be changed into a prime (14161531605269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96996791744 + ... + 96996791889.

It is an arithmetic number, because the mean of its divisors is an integer number (3588881297229).

Almost surely, 2^{14161531605209} is an apocalyptic number.

It is an amenable number.

14161531605209 is a deficient number, since it is larger than the sum of its proper divisors (193993583707).

14161531605209 is an equidigital number, since it uses as much as digits as its factorization.

14161531605209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193993583706.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 14161531605209 in words is "fourteen trillion, one hundred sixty-one billion, five hundred thirty-one million, six hundred five thousand, two hundred nine".