129253000505 has 8 divisors (see below), whose sum is σ = 155122357824. Its totient is φ = 103389895600.

The previous prime is 129253000501. The next prime is 129253000511. The reversal of 129253000505 is 505000352921.

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

It is not a de Polignac number, because 129253000505 - 2² = 129253000501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129253000501) 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, 1517501 + ... + 1600410.

It is an arithmetic number, because the mean of its divisors is an integer number (19390294728).

Almost surely, 2^129253000505 is an apocalyptic number.

It is an amenable number.

129253000505 is a deficient number, since it is larger than the sum of its proper divisors (25869357319).

129253000505 is an equidigital number, since it uses as much as digits as its factorization.

129253000505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126207.

The product of its (nonzero) digits is 13500, while the sum is 32.

The spelling of 129253000505 in words is "one hundred twenty-nine billion, two hundred fifty-three million, five hundred five", and thus it is an aban number.