129514982009 has 4 divisors (see below), whose sum is σ = 148017122304. Its totient is φ = 111012841716.

The previous prime is 129514981993. The next prime is 129514982017. The reversal of 129514982009 is 900289415921.

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.

It is not a de Polignac number, because 129514982009 - 2⁴ = 129514981993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129514982059) 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, 9251070137 + ... + 9251070150.

It is an arithmetic number, because the mean of its divisors is an integer number (37004280576).

Almost surely, 2^129514982009 is an apocalyptic number.

It is an amenable number.

129514982009 is a deficient number, since it is larger than the sum of its proper divisors (18502140295).

129514982009 is an equidigital number, since it uses as much as digits as its factorization.

129514982009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18502140294.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 129514982009 in words is "one hundred twenty-nine billion, five hundred fourteen million, nine hundred eighty-two thousand, nine".