129065389841 has 4 divisors (see below), whose sum is σ = 129066158400. Its totient is φ = 129064621284.

The previous prime is 129065389793. The next prime is 129065389853. The reversal of 129065389841 is 148983560921.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 129065389841 - 2³⁰ = 127991648017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129065389861) 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, 12461 + ... + 508218.

It is an arithmetic number, because the mean of its divisors is an integer number (32266539600).

Almost surely, 2^129065389841 is an apocalyptic number.

It is an amenable number.

129065389841 is a deficient number, since it is larger than the sum of its proper divisors (768559).

129065389841 is an equidigital number, since it uses as much as digits as its factorization.

129065389841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768558.

The product of its (nonzero) digits is 3732480, while the sum is 56.

The spelling of 129065389841 in words is "one hundred twenty-nine billion, sixty-five million, three hundred eighty-nine thousand, eight hundred forty-one".