129820863489 has 8 divisors (see below), whose sum is σ = 175465642272. Its totient is φ = 85361663520.

The previous prime is 129820863463. The next prime is 129820863503. The reversal of 129820863489 is 984368028921.

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

It is not a de Polignac number, because 129820863489 - 2²⁰ = 129819814913 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129820863439) 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, 296394447 + ... + 296394884.

It is an arithmetic number, because the mean of its divisors is an integer number (21933205284).

Almost surely, 2^129820863489 is an apocalyptic number.

It is an amenable number.

129820863489 is a deficient number, since it is larger than the sum of its proper divisors (45644778783).

129820863489 is an equidigital number, since it uses as much as digits as its factorization.

129820863489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592789407.

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 129820863489 in words is "one hundred twenty-nine billion, eight hundred twenty million, eight hundred sixty-three thousand, four hundred eighty-nine".