129109824469 has 16 divisors (see below), whose sum is σ = 140290614576. Its totient is φ = 118338150400.

The previous prime is 129109824413. The next prime is 129109824479. The reversal of 129109824469 is 964428901921.

It can be written as a sum of positive squares in 8 ways, for example, as 469242244 + 128640582225 = 21662^2 + 358665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129109824469 is a prime.

It is a super-2 number, since 2×129109824469² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129109824479) 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, 221949 + ... + 554509.

It is an arithmetic number, because the mean of its divisors is an integer number (8768163411).

Almost surely, 2^129109824469 is an apocalyptic number.

It is an amenable number.

129109824469 is a deficient number, since it is larger than the sum of its proper divisors (11180790107).

129109824469 is a wasteful number, since it uses less digits than its factorization.

129109824469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333176.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 129109824469 in words is "one hundred twenty-nine billion, one hundred nine million, eight hundred twenty-four thousand, four hundred sixty-nine".