129680681750 has 16 divisors (see below), whose sum is σ = 242762236704. Its totient is φ = 51872272600.

The previous prime is 129680681699. The next prime is 129680681777. The reversal of 129680681750 is 57186086921.

It is a junction number, because it is equal to n+sod(n) for n = 129680681692 and 129680681701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259361114 + ... + 259361613.

It is an arithmetic number, because the mean of its divisors is an integer number (15172639794).

Almost surely, 2^129680681750 is an apocalyptic number.

129680681750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129680681750 is a deficient number, since it is larger than the sum of its proper divisors (113081554954).

129680681750 is an equidigital number, since it uses as much as digits as its factorization.

129680681750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518722744 (or 518722734 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 129680681750 in words is "one hundred twenty-nine billion, six hundred eighty million, six hundred eighty-one thousand, seven hundred fifty".