129163256893439 has 16 divisors (see below), whose sum is σ = 130418399430720. Its totient is φ = 127914317752320.

The previous prime is 129163256893427. The next prime is 129163256893441. The reversal of 129163256893439 is 934398652361921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129163256893439 is a prime.

It is a super-3 number, since 3×129163256893439³ (a number of 43 digits) contains 333 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 (129163256893739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309037574 + ... + 309455244.

It is an arithmetic number, because the mean of its divisors is an integer number (8151149964420).

Almost surely, 2^{129163256893439} is an apocalyptic number.

129163256893439 is a deficient number, since it is larger than the sum of its proper divisors (1255142537281).

129163256893439 is a wasteful number, since it uses less digits than its factorization.

129163256893439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425090.

The product of its digits is 453496320, while the sum is 71.

The spelling of 129163256893439 in words is "one hundred twenty-nine trillion, one hundred sixty-three billion, two hundred fifty-six million, eight hundred ninety-three thousand, four hundred thirty-nine".