129171348386 has 32 divisors (see below), whose sum is σ = 205847018496. Its totient is φ = 60664450000.

The previous prime is 129171348377. The next prime is 129171348401. The reversal of 129171348386 is 683843171921.

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 15 ways as a sum of consecutive naturals, for example, 740981 + ... + 898551.

It is an arithmetic number, because the mean of its divisors is an integer number (6432719328).

Almost surely, 2^129171348386 is an apocalyptic number.

129171348386 is a deficient number, since it is larger than the sum of its proper divisors (76675670110).

129171348386 is a wasteful number, since it uses less digits than its factorization.

129171348386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157918.

The product of its digits is 1741824, while the sum is 53.

The spelling of 129171348386 in words is "one hundred twenty-nine billion, one hundred seventy-one million, three hundred forty-eight thousand, three hundred eighty-six".