129999948671 has 8 divisors (see below), whose sum is σ = 130237884000. Its totient is φ = 129762086400.

The previous prime is 129999948629. The next prime is 129999948731. The reversal of 129999948671 is 176849999921.

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

It is a cyclic number.

It is not a de Polignac number, because 129999948671 - 2³⁴ = 112820079487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129999948601) 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, 4582910 + ... + 4611188.

It is an arithmetic number, because the mean of its divisors is an integer number (16279735500).

Almost surely, 2^129999948671 is an apocalyptic number.

129999948671 is a deficient number, since it is larger than the sum of its proper divisors (237935329).

129999948671 is an equidigital number, since it uses as much as digits as its factorization.

129999948671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36529.

The product of its digits is 158723712, while the sum is 74.

The spelling of 129999948671 in words is "one hundred twenty-nine billion, nine hundred ninety-nine million, nine hundred forty-eight thousand, six hundred seventy-one".