129054332161 has 4 divisors (see below), whose sum is σ = 129060305712. Its totient is φ = 129048358612.

The previous prime is 129054332123. The next prime is 129054332167. The reversal of 129054332161 is 161233450921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 161233450921 = 52579 ⋅3066499.

It is a cyclic number.

It is not a de Polignac number, because 129054332161 - 2²⁹ = 128517461249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129054332161.

It is not an unprimeable number, because it can be changed into a prime (129054332167) 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, 2954251 + ... + 2997616.

It is an arithmetic number, because the mean of its divisors is an integer number (32265076428).

Almost surely, 2^129054332161 is an apocalyptic number.

It is an amenable number.

129054332161 is a deficient number, since it is larger than the sum of its proper divisors (5973551).

129054332161 is an equidigital number, since it uses as much as digits as its factorization.

129054332161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5973550.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 129054332161 in words is "one hundred twenty-nine billion, fifty-four million, three hundred thirty-two thousand, one hundred sixty-one".