129697966272 has 112 divisors (see below), whose sum is σ = 394680561920. Its totient is φ = 36820472832.

The previous prime is 129697966183. The next prime is 129697966273. The reversal of 129697966272 is 272669796921.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (129697966273) by changing a digit.

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, 96322 + ... + 518337.

Almost surely, 2^129697966272 is an apocalyptic number.

129697966272 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 129697966272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197340280960).

129697966272 is an abundant number, since it is smaller than the sum of its proper divisors (264982595648).

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

129697966272 is a wasteful number, since it uses less digits than its factorization.

129697966272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614838 (or 614828 counting only the distinct ones).

The product of its digits is 61725888, while the sum is 66.

The spelling of 129697966272 in words is "one hundred twenty-nine billion, six hundred ninety-seven million, nine hundred sixty-six thousand, two hundred seventy-two".