129866543074 has 16 divisors (see below), whose sum is σ = 203330635200. Its totient is φ = 62091366480.

The previous prime is 129866543041. The next prime is 129866543087. The reversal of 129866543074 is 470345668921.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270549 + ... + 577000.

It is an arithmetic number, because the mean of its divisors is an integer number (12708164700).

It is a 2-persistent number, because it is pandigital, and so is 2⋅129866543074 = 259733086148, but 3⋅129866543074 = 389599629222 is not.

Almost surely, 2^129866543074 is an apocalyptic number.

129866543074 is a deficient number, since it is larger than the sum of its proper divisors (73464092126).

129866543074 is a wasteful number, since it uses less digits than its factorization.

129866543074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850905.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 129866543074 in words is "one hundred twenty-nine billion, eight hundred sixty-six million, five hundred forty-three thousand, seventy-four".