129517241112 has 128 divisors (see below), whose sum is σ = 422278617600. Its totient is φ = 36004777344.

The previous prime is 129517241111. The next prime is 129517241167. The reversal of 129517241112 is 211142715921.

It is a happy number.

129517241112 is a `hidden beast` number, since 1 + 2 + 9 + 517 + 24 + 1 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129517241111) 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 31 ways as a sum of consecutive naturals, for example, 1101618 + ... + 1213505.

It is an arithmetic number, because the mean of its divisors is an integer number (3299051700).

Almost surely, 2^129517241112 is an apocalyptic number.

129517241112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129517241112 is an abundant number, since it is smaller than the sum of its proper divisors (292761376488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129517241112 is a wasteful number, since it uses less digits than its factorization.

129517241112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315182 (or 2315172 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The spelling of 129517241112 in words is "one hundred twenty-nine billion, five hundred seventeen million, two hundred forty-one thousand, one hundred twelve".