129686954471773 has 8 divisors (see below), whose sum is σ = 132345793395000. Its totient is φ = 127051961637888.

The previous prime is 129686954471761. The next prime is 129686954471803. The reversal of 129686954471773 is 377174459686921.

It can be written as a sum of positive squares in 4 ways, for example, as 411032289924 + 129275922181849 = 641118^2 + 11369957^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129686954471773 - 2¹⁷ = 129686954340701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129686954471693 and 129686954471702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129686054471773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5961511348 + ... + 5961533101.

It is an arithmetic number, because the mean of its divisors is an integer number (16543224174375).

Almost surely, 2^{129686954471773} is an apocalyptic number.

It is an amenable number.

129686954471773 is a deficient number, since it is larger than the sum of its proper divisors (2658838923227).

129686954471773 is a wasteful number, since it uses less digits than its factorization.

129686954471773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11923044671.

The product of its digits is 3840721920, while the sum is 79.

The spelling of 129686954471773 in words is "one hundred twenty-nine trillion, six hundred eighty-six billion, nine hundred fifty-four million, four hundred seventy-one thousand, seven hundred seventy-three".