13965317869 has 4 divisors (see below), whose sum is σ = 14305935420. Its totient is φ = 13624700320.

The previous prime is 13965317843. The next prime is 13965317897. The reversal of 13965317869 is 96871356931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96871356931 = 305803 ⋅316777.

It can be written as a sum of positive squares in 2 ways, for example, as 5656995369 + 8308322500 = 75213^2 + 91150^2 .

It is a cyclic number.

It is not a de Polignac number, because 13965317869 - 2⁷ = 13965317741 is a prime.

It is a super-2 number, since 2×13965317869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13965317809) 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, 170308714 + ... + 170308795.

It is an arithmetic number, because the mean of its divisors is an integer number (3576483855).

Almost surely, 2^13965317869 is an apocalyptic number.

It is an amenable number.

13965317869 is a deficient number, since it is larger than the sum of its proper divisors (340617551).

13965317869 is an equidigital number, since it uses as much as digits as its factorization.

13965317869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340617550.

The product of its digits is 7348320, while the sum is 58.

The spelling of 13965317869 in words is "thirteen billion, nine hundred sixty-five million, three hundred seventeen thousand, eight hundred sixty-nine".