129934974817 has 16 divisors (see below), whose sum is σ = 134880076800. Its totient is φ = 125021332800.

The previous prime is 129934974811. The next prime is 129934974833. The reversal of 129934974817 is 718479439921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129934974817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129934974811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20308663 + ... + 20315059.

It is an arithmetic number, because the mean of its divisors is an integer number (8430004800).

Almost surely, 2^129934974817 is an apocalyptic number.

It is an amenable number.

129934974817 is a deficient number, since it is larger than the sum of its proper divisors (4945101983).

129934974817 is a wasteful number, since it uses less digits than its factorization.

129934974817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8736.

The product of its digits is 27433728, while the sum is 64.

The spelling of 129934974817 in words is "one hundred twenty-nine billion, nine hundred thirty-four million, nine hundred seventy-four thousand, eight hundred seventeen".