13161394129 has 4 divisors (see below), whose sum is σ = 14173809076. Its totient is φ = 12148979184.

The previous prime is 13161394109. The next prime is 13161394139. The reversal of 13161394129 is 92149316131.

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 567392400 + 12594001729 = 23820^2 + 112223^2 .

It is a cyclic number.

It is not a de Polignac number, because 13161394129 - 2⁵ = 13161394097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13161394091 and 13161394100.

It is not an unprimeable number, because it can be changed into a prime (13161394109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 506207454 + ... + 506207479.

It is an arithmetic number, because the mean of its divisors is an integer number (3543452269).

Almost surely, 2^13161394129 is an apocalyptic number.

It is an amenable number.

13161394129 is a deficient number, since it is larger than the sum of its proper divisors (1012414947).

13161394129 is a wasteful number, since it uses less digits than its factorization.

13161394129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012414946.

The product of its digits is 34992, while the sum is 40.

The spelling of 13161394129 in words is "thirteen billion, one hundred sixty-one million, three hundred ninety-four thousand, one hundred twenty-nine".