129798796176 has 135 divisors (see below), whose sum is σ = 422662058481. Its totient is φ = 37076723712.

The previous prime is 129798796163. The next prime is 129798796181. The reversal of 129798796176 is 671697897921.

The square root of 129798796176 is 360276.

It is a perfect power (a square), and thus also a powerful number.

129798796176 is a `hidden beast` number, since 1 + 297 + 9 + 87 + 96 + 176 = 666.

It can be written as a sum of positive squares in only one way, i.e., 122167026576 + 7631769600 = 349524^2 + 87360^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 30261040 + ... + 30265328.

Almost surely, 2^129798796176 is an apocalyptic number.

129798796176 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

129798796176 is the 360276-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129798796176

129798796176 is an abundant number, since it is smaller than the sum of its proper divisors (292863262305).

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

129798796176 is an frugal number, since it uses more digits than its factorization.

129798796176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8606 (or 4301 counting only the distinct ones).

The product of its digits is 144027072, while the sum is 72.

The spelling of 129798796176 in words is "one hundred twenty-nine billion, seven hundred ninety-eight million, seven hundred ninety-six thousand, one hundred seventy-six".