129988881739 has 8 divisors (see below), whose sum is σ = 130904000000. Its totient is φ = 129076382952.

The previous prime is 129988881733. The next prime is 129988881773. The reversal of 129988881739 is 937188889921.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129988881739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129988881733) 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, 555219 + ... + 753820.

It is an arithmetic number, because the mean of its divisors is an integer number (16363000000).

Almost surely, 2^129988881739 is an apocalyptic number.

129988881739 is a deficient number, since it is larger than the sum of its proper divisors (915118261).

129988881739 is a wasteful number, since it uses less digits than its factorization.

129988881739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309737.

The product of its digits is 125411328, while the sum is 73.

The spelling of 129988881739 in words is "one hundred twenty-nine billion, nine hundred eighty-eight million, eight hundred eighty-one thousand, seven hundred thirty-nine".