129272109872116 has 6 divisors (see below), whose sum is σ = 226226192276210. Its totient is φ = 64636054936056.

The previous prime is 129272109872107. The next prime is 129272109872249. The reversal of 129272109872116 is 611278901272921.

It can be written as a sum of positive squares in only one way, i.e., 82784885904400 + 46487223967716 = 9098620^2 + 6818154^2 .

It is a super-2 number, since 2×129272109872116² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16159013734011 + ... + 16159013734018.

Almost surely, 2^{129272109872116} is an apocalyptic number.

It is an amenable number.

129272109872116 is a deficient number, since it is larger than the sum of its proper divisors (96954082404094).

129272109872116 is a wasteful number, since it uses less digits than its factorization.

129272109872116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32318027468033 (or 32318027468031 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 58.

The spelling of 129272109872116 in words is "one hundred twenty-nine trillion, two hundred seventy-two billion, one hundred nine million, eight hundred seventy-two thousand, one hundred sixteen".