129711045771 has 6 divisors (see below), whose sum is σ = 187360399460. Its totient is φ = 86474030508.

The previous prime is 129711045757. The next prime is 129711045791. The reversal of 129711045771 is 177540117921.

129711045771 is a `hidden beast` number, since 1 + 2 + 9 + 71 + 1 + 0 + 4 + 577 + 1 = 666.

It is not a de Polignac number, because 129711045771 - 2¹⁰ = 129711044747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129711045731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7206169201 + ... + 7206169218.

Almost surely, 2^129711045771 is an apocalyptic number.

129711045771 is a deficient number, since it is larger than the sum of its proper divisors (57649353689).

129711045771 is a wasteful number, since it uses less digits than its factorization.

129711045771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14412338425 (or 14412338422 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 45.

The spelling of 129711045771 in words is "one hundred twenty-nine billion, seven hundred eleven million, forty-five thousand, seven hundred seventy-one".