13429769640109 has 4 divisors (see below), whose sum is σ = 13429789064604. Its totient is φ = 13429750215616.

The previous prime is 13429769639977. The next prime is 13429769640143. The reversal of 13429769640109 is 90104696792431.

13429769640109 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 154859564484 + 13274910075625 = 393522^2 + 3643475^2 .

It is a cyclic number.

It is not a de Polignac number, because 13429769640109 - 2²⁵ = 13429736085677 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 (13429769640179) 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, 8635372 + ... + 10071205.

It is an arithmetic number, because the mean of its divisors is an integer number (3357447266151).

Almost surely, 2^{13429769640109} is an apocalyptic number.

It is an amenable number.

13429769640109 is a deficient number, since it is larger than the sum of its proper divisors (19424495).

13429769640109 is an equidigital number, since it uses as much as digits as its factorization.

13429769640109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19424494.

The product of its (nonzero) digits is 17635968, while the sum is 61.

The spelling of 13429769640109 in words is "thirteen trillion, four hundred twenty-nine billion, seven hundred sixty-nine million, six hundred forty thousand, one hundred nine".