129647902361 has 16 divisors (see below), whose sum is σ = 133647872400. Its totient is φ = 125709262848.

The previous prime is 129647902327. The next prime is 129647902393. The reversal of 129647902361 is 163209746921.

It can be written as a sum of positive squares in 8 ways, for example, as 4928742025 + 124719160336 = 70205^2 + 353156^2 .

It is a cyclic number.

It is not a de Polignac number, because 129647902361 - 2¹⁴ = 129647885977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129647902301) 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, 3627185 + ... + 3662753.

It is an arithmetic number, because the mean of its divisors is an integer number (8352992025).

Almost surely, 2^129647902361 is an apocalyptic number.

It is an amenable number.

129647902361 is a deficient number, since it is larger than the sum of its proper divisors (3999970039).

129647902361 is an equidigital number, since it uses as much as digits as its factorization.

129647902361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36428.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 129647902361 in words is "one hundred twenty-nine billion, six hundred forty-seven million, nine hundred two thousand, three hundred sixty-one".