129291714771 has 8 divisors (see below), whose sum is σ = 173914519440. Its totient is φ = 85431693312.

The previous prime is 129291714763. The next prime is 129291714809. The reversal of 129291714771 is 177417192921.

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

It is not a de Polignac number, because 129291714771 - 2³ = 129291714763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129291754771) 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, 190695406 + ... + 190696083.

It is an arithmetic number, because the mean of its divisors is an integer number (21739314930).

Almost surely, 2^129291714771 is an apocalyptic number.

129291714771 is a deficient number, since it is larger than the sum of its proper divisors (44622804669).

129291714771 is a wasteful number, since it uses less digits than its factorization.

129291714771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381391605.

The product of its digits is 444528, while the sum is 51.

The spelling of 129291714771 in words is "one hundred twenty-nine billion, two hundred ninety-one million, seven hundred fourteen thousand, seven hundred seventy-one".