13842406449569 has 4 divisors (see below), whose sum is σ = 13842677691696. Its totient is φ = 13842135207444.

The previous prime is 13842406449563. The next prime is 13842406449583. The reversal of 13842406449569 is 96594460424831.

13842406449569 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13842406449569 is a prime.

It is a super-2 number, since 2×13842406449569² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13842406449563) 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, 135544499 + ... + 135646584.

It is an arithmetic number, because the mean of its divisors is an integer number (3460669422924).

Almost surely, 2^{13842406449569} is an apocalyptic number.

It is an amenable number.

13842406449569 is a deficient number, since it is larger than the sum of its proper divisors (271242127).

13842406449569 is an equidigital number, since it uses as much as digits as its factorization.

13842406449569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271242126.

The product of its (nonzero) digits is 179159040, while the sum is 65.

The spelling of 13842406449569 in words is "thirteen trillion, eight hundred forty-two billion, four hundred six million, four hundred forty-nine thousand, five hundred sixty-nine".