129159383951921 has 8 divisors (see below), whose sum is σ = 136124887768800. Its totient is φ = 122210644285440.

The previous prime is 129159383951909. The next prime is 129159383951929.

129159383951921 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129159383951921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129159383951929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4191021776 + ... + 4191052593.

It is an arithmetic number, because the mean of its divisors is an integer number (17015610971100).

Almost surely, 2^{129159383951921} is an apocalyptic number.

It is an amenable number.

129159383951921 is a deficient number, since it is larger than the sum of its proper divisors (6965503816879).

129159383951921 is an equidigital number, since it uses as much as digits as its factorization.

129159383951921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8382075199.

The product of its digits is 47239200, while the sum is 68.

The spelling of 129159383951921 in words is "one hundred twenty-nine trillion, one hundred fifty-nine billion, three hundred eighty-three million, nine hundred fifty-one thousand, nine hundred twenty-one".