129341681929 has 8 divisors (see below), whose sum is σ = 134996290632. Its totient is φ = 123806117760.

The previous prime is 129341681899. The next prime is 129341681941. The reversal of 129341681929 is 929186143921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17076478329 + 112265203600 = 130677^2 + 335060^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129341681929 - 2⁷ = 129341681801 is a prime.

It is a super-2 number, since 2×129341681929² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129341681929.

It is not an unprimeable number, because it can be changed into a prime (129341681969) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 29758914 + ... + 29763259.

It is an arithmetic number, because the mean of its divisors is an integer number (16874536329).

Almost surely, 2^129341681929 is an apocalyptic number.

It is an amenable number.

129341681929 is a deficient number, since it is larger than the sum of its proper divisors (5654608703).

129341681929 is an equidigital number, since it uses as much as digits as its factorization.

129341681929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59522267.

The product of its digits is 1679616, while the sum is 55.

The spelling of 129341681929 in words is "one hundred twenty-nine billion, three hundred forty-one million, six hundred eighty-one thousand, nine hundred twenty-nine".