129784066193 has 4 divisors (see below), whose sum is σ = 129785899248. Its totient is φ = 129782233140.

The previous prime is 129784066151. The next prime is 129784066207. The reversal of 129784066193 is 391660487921.

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: 391660487921 = 113 ⋅3466022017.

It is a cyclic number.

It is not a de Polignac number, because 129784066193 - 2⁶ = 129784066129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129784066493) 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, 805871 + ... + 953412.

It is an arithmetic number, because the mean of its divisors is an integer number (32446474812).

Almost surely, 2^129784066193 is an apocalyptic number.

It is an amenable number.

129784066193 is a deficient number, since it is larger than the sum of its proper divisors (1833055).

129784066193 is an equidigital number, since it uses as much as digits as its factorization.

129784066193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833054.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 129784066193 in words is "one hundred twenty-nine billion, seven hundred eighty-four million, sixty-six thousand, one hundred ninety-three".