129727423289794 has 48 divisors (see below), whose sum is σ = 219868737824736. Its totient is φ = 56929770172800.

The previous prime is 129727423289777. The next prime is 129727423289797. The reversal of 129727423289794 is 497982324727921.

It is a self number, because there is not a number n which added to its sum of digits gives 129727423289794.

It is not an unprimeable number, because it can be changed into a prime (129727423289797) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278981374 + ... + 279445990.

It is an arithmetic number, because the mean of its divisors is an integer number (4580598704682).

Almost surely, 2^{129727423289794} is an apocalyptic number.

129727423289794 is a deficient number, since it is larger than the sum of its proper divisors (90141314534942).

129727423289794 is a wasteful number, since it uses less digits than its factorization.

129727423289794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479779 (or 479750 counting only the distinct ones).

The product of its digits is 1536288768, while the sum is 76.

The spelling of 129727423289794 in words is "one hundred twenty-nine trillion, seven hundred twenty-seven billion, four hundred twenty-three million, two hundred eighty-nine thousand, seven hundred ninety-four".