129935857930 has 8 divisors (see below), whose sum is σ = 233884544292. Its totient is φ = 51974343168.

The previous prime is 129935857913. The next prime is 129935857939. The reversal of 129935857930 is 39758539921.

It can be written as a sum of positive squares in 2 ways, for example, as 113048595529 + 16887262401 = 336227^2 + 129951^2 .

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

It is not an unprimeable number, because it can be changed into a prime (129935857939) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6496792887 + ... + 6496792906.

Almost surely, 2^129935857930 is an apocalyptic number.

129935857930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129935857930 is a deficient number, since it is larger than the sum of its proper divisors (103948686362).

129935857930 is a wasteful number, since it uses less digits than its factorization.

129935857930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12993585800.

The product of its (nonzero) digits is 18370800, while the sum is 61.

The spelling of 129935857930 in words is "one hundred twenty-nine billion, nine hundred thirty-five million, eight hundred fifty-seven thousand, nine hundred thirty".