129804781176769 has 16 divisors (see below), whose sum is σ = 139001258854080. Its totient is φ = 120856757978880.

The previous prime is 129804781176571. The next prime is 129804781176787. The reversal of 129804781176769 is 967671187408921.

It is a cyclic number.

It is not a de Polignac number, because 129804781176769 - 2¹¹ = 129804781174721 is a prime.

It is a super-2 number, since 2×129804781176769² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129804781176695 and 129804781176704.

It is not an unprimeable number, because it can be changed into a prime (129804781146769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166134667 + ... + 166914160.

It is an arithmetic number, because the mean of its divisors is an integer number (8687578678380).

Almost surely, 2^{129804781176769} is an apocalyptic number.

129804781176769 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

129804781176769 is a deficient number, since it is larger than the sum of its proper divisors (9196477677311).

129804781176769 is a wasteful number, since it uses less digits than its factorization.

129804781176769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333049200.

The product of its (nonzero) digits is 512096256, while the sum is 76.

The spelling of 129804781176769 in words is "one hundred twenty-nine trillion, eight hundred four billion, seven hundred eighty-one million, one hundred seventy-six thousand, seven hundred sixty-nine".