129966228479642 has 16 divisors (see below), whose sum is σ = 205745630376960. Its totient is φ = 61402211551872.

The previous prime is 129966228479609. The next prime is 129966228479669. The reversal of 129966228479642 is 246974822669921.

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, 4464951383 + ... + 4464980490.

It is an arithmetic number, because the mean of its divisors is an integer number (12859101898560).

Almost surely, 2^{129966228479642} is an apocalyptic number.

129966228479642 is a deficient number, since it is larger than the sum of its proper divisors (75779401897318).

129966228479642 is a wasteful number, since it uses less digits than its factorization.

129966228479642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8929932277.

The product of its digits is 2257403904, while the sum is 77.

The spelling of 129966228479642 in words is "one hundred twenty-nine trillion, nine hundred sixty-six billion, two hundred twenty-eight million, four hundred seventy-nine thousand, six hundred forty-two".