129234449260 has 120 divisors (see below), whose sum is σ = 317449878480. Its totient is φ = 44190824832.

The previous prime is 129234449213. The next prime is 129234449263. The reversal of 129234449260 is 62944432921.

It is a self number, because there is not a number n which added to its sum of digits gives 129234449260.

It is not an unprimeable number, because it can be changed into a prime (129234449263) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19060551 + ... + 19067329.

It is an arithmetic number, because the mean of its divisors is an integer number (2645415654).

Almost surely, 2^129234449260 is an apocalyptic number.

129234449260 is a gapful number since it is divisible by the number (10) 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 129234449260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158724939240).

129234449260 is an abundant number, since it is smaller than the sum of its proper divisors (188215429220).

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

129234449260 is an equidigital number, since it uses as much as digits as its factorization.

129234449260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7213 (or 7190 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 129234449260 in words is "one hundred twenty-nine billion, two hundred thirty-four million, four hundred forty-nine thousand, two hundred sixty".