129711075730 has 16 divisors (see below), whose sum is σ = 233496065880. Its totient is φ = 51880845952.

The previous prime is 129711075691. The next prime is 129711075763. The reversal of 129711075730 is 37570117921.

It can be written as a sum of positive squares in 4 ways, for example, as 111264274969 + 18446800761 = 333563^2 + 135819^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293515 + ... + 587854.

Almost surely, 2^129711075730 is an apocalyptic number.

129711075730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129711075730 is a deficient number, since it is larger than the sum of its proper divisors (103784990150).

129711075730 is a wasteful number, since it uses less digits than its factorization.

129711075730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896093.

The product of its (nonzero) digits is 92610, while the sum is 43.

The spelling of 129711075730 in words is "one hundred twenty-nine billion, seven hundred eleven million, seventy-five thousand, seven hundred thirty".