129299828352 has 128 divisors (see below), whose sum is σ = 368260473600. Its totient is φ = 40051015680.

The previous prime is 129299828303. The next prime is 129299828389. The reversal of 129299828352 is 253828992921.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×129299828352² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390352 + ... + 641072.

It is an arithmetic number, because the mean of its divisors is an integer number (2877034950).

Almost surely, 2^129299828352 is an apocalyptic number.

129299828352 is a gapful number since it is divisible by the number (12) 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 129299828352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184130236800).

129299828352 is an abundant number, since it is smaller than the sum of its proper divisors (238960645248).

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

129299828352 is a wasteful number, since it uses less digits than its factorization.

129299828352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250834 (or 250822 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 60.

The spelling of 129299828352 in words is "one hundred twenty-nine billion, two hundred ninety-nine million, eight hundred twenty-eight thousand, three hundred fifty-two".