129168574671 has 16 divisors (see below), whose sum is σ = 175379212800. Its totient is φ = 84547339968.

The previous prime is 129168574669. The next prime is 129168574723. The reversal of 129168574671 is 176475861921.

It is not a de Polignac number, because 129168574671 - 2¹ = 129168574669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129168572671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479966 + ... + 1564811.

It is an arithmetic number, because the mean of its divisors is an integer number (10961200800).

Almost surely, 2^129168574671 is an apocalyptic number.

129168574671 is a deficient number, since it is larger than the sum of its proper divisors (46210638129).

129168574671 is a wasteful number, since it uses less digits than its factorization.

129168574671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045038.

The product of its digits is 5080320, while the sum is 57.

The spelling of 129168574671 in words is "one hundred twenty-nine billion, one hundred sixty-eight million, five hundred seventy-four thousand, six hundred seventy-one".