129200444496 has 120 divisors (see below), whose sum is σ = 375560587584. Its totient is φ = 42999413760.

The previous prime is 129200444479. The next prime is 129200444521. The reversal of 129200444496 is 694444002921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2489856 + ... + 2541216.

Almost surely, 2^129200444496 is an apocalyptic number.

129200444496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129200444496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187780293792).

129200444496 is an abundant number, since it is smaller than the sum of its proper divisors (246360143088).

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

129200444496 is an equidigital number, since it uses as much as digits as its factorization.

129200444496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52031 (or 52013 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 129200444496 in words is "one hundred twenty-nine billion, two hundred million, four hundred forty-four thousand, four hundred ninety-six".