129081512291 has 8 divisors (see below), whose sum is σ = 129873072384. Its totient is φ = 128291329600.

The previous prime is 129081512279. The next prime is 129081512297. The reversal of 129081512291 is 192215180921.

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 129081512291 - 2¹⁸ = 129081250147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129081512297) 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, 156035 + ... + 531516.

It is an arithmetic number, because the mean of its divisors is an integer number (16234134048).

Almost surely, 2^129081512291 is an apocalyptic number.

129081512291 is a deficient number, since it is larger than the sum of its proper divisors (791560093).

129081512291 is an equidigital number, since it uses as much as digits as its factorization.

129081512291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688701.

The product of its (nonzero) digits is 25920, while the sum is 41.

The spelling of 129081512291 in words is "one hundred twenty-nine billion, eighty-one million, five hundred twelve thousand, two hundred ninety-one".