129849107028 has 24 divisors (see below), whose sum is σ = 303513745920. Its totient is φ = 43206964800.

The previous prime is 129849107009. The next prime is 129849107117. The reversal of 129849107028 is 820701948921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9501748 + ... + 9515403.

It is an arithmetic number, because the mean of its divisors is an integer number (12646406080).

Almost surely, 2^129849107028 is an apocalyptic number.

It is an amenable number.

129849107028 is an abundant number, since it is smaller than the sum of its proper divisors (173664638892).

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

129849107028 is a wasteful number, since it uses less digits than its factorization.

129849107028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19017727 (or 19017725 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 51.

The spelling of 129849107028 in words is "one hundred twenty-nine billion, eight hundred forty-nine million, one hundred seven thousand, twenty-eight".