129647652609 has 8 divisors (see below), whose sum is σ = 173093717632. Its totient is φ = 86316678000.

The previous prime is 129647652577. The next prime is 129647652637. The reversal of 129647652609 is 906256746921.

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

It is not a de Polignac number, because 129647652609 - 2⁵ = 129647652577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129647652209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28769974 + ... + 28774479.

It is an arithmetic number, because the mean of its divisors is an integer number (21636714704).

Almost surely, 2^129647652609 is an apocalyptic number.

It is an amenable number.

129647652609 is a deficient number, since it is larger than the sum of its proper divisors (43446065023).

129647652609 is an equidigital number, since it uses as much as digits as its factorization.

129647652609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57545207.

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 129647652609 in words is "one hundred twenty-nine billion, six hundred forty-seven million, six hundred fifty-two thousand, six hundred nine".