129111555539 has 8 divisors (see below), whose sum is σ = 134992956672. Its totient is φ = 123252475720.

The previous prime is 129111555527. The next prime is 129111555541. The reversal of 129111555539 is 935555111921.

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

It is a cyclic number.

It is not a de Polignac number, because 129111555539 - 2³² = 124816588243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129111555493 and 129111555502.

It is not an unprimeable number, because it can be changed into a prime (129111555439) 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, 5568497 + ... + 5591634.

It is an arithmetic number, because the mean of its divisors is an integer number (16874119584).

Almost surely, 2^129111555539 is an apocalyptic number.

129111555539 is a deficient number, since it is larger than the sum of its proper divisors (5881401133).

129111555539 is a wasteful number, since it uses less digits than its factorization.

129111555539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11160657.

The product of its digits is 303750, while the sum is 47.

The spelling of 129111555539 in words is "one hundred twenty-nine billion, one hundred eleven million, five hundred fifty-five thousand, five hundred thirty-nine".