129501112840 has 64 divisors (see below), whose sum is σ = 336564408960. Its totient is φ = 44321233920.

The previous prime is 129501112801. The next prime is 129501112859. The reversal of 129501112840 is 48211105921.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 129501112796 and 129501112805.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8649012 + ... + 8663971.

It is an arithmetic number, because the mean of its divisors is an integer number (5258818890).

Almost surely, 2^129501112840 is an apocalyptic number.

129501112840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129501112840 is an abundant number, since it is smaller than the sum of its proper divisors (207063296120).

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

129501112840 is a wasteful number, since it uses less digits than its factorization.

129501112840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17313022 (or 17313018 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 34.

The spelling of 129501112840 in words is "one hundred twenty-nine billion, five hundred one million, one hundred twelve thousand, eight hundred forty".