129243164838 has 8 divisors (see below), whose sum is σ = 258486329688. Its totient is φ = 43081054944.

The previous prime is 129243164821. The next prime is 129243164839. The reversal of 129243164838 is 838461342921.

It is a sphenic number, since it is the product of 3 distinct primes.

129243164838 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129243164839) 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, 10770263731 + ... + 10770263742.

It is an arithmetic number, because the mean of its divisors is an integer number (32310791211).

Almost surely, 2^129243164838 is an apocalyptic number.

129243164838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129243164838 is a wasteful number, since it uses less digits than its factorization.

129243164838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21540527478.

The product of its digits is 1990656, while the sum is 51.

The spelling of 129243164838 in words is "one hundred twenty-nine billion, two hundred forty-three million, one hundred sixty-four thousand, eight hundred thirty-eight".