129052303694161 has 9 divisors (see below), whose sum is σ = 136202243610843. Its totient is φ = 122259872701800.

The previous prime is 129052303694131. The next prime is 129052303694173. The reversal of 129052303694161 is 161496303250921.

The square root of 129052303694161 is 11360119.

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

It can be written as a sum of positive squares in only one way, i.e., 45315529085761 + 83736774608400 = 6731681^2 + 9150780^2 .

It is a de Polignac number, because none of the positive numbers 2^k-129052303694161 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129052303694099 and 129052303694108.

It is not an unprimeable number, because it can be changed into a prime (129052303694131) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 215543311 + ... + 216141211.

It is an arithmetic number, because the mean of its divisors is an integer number (15133582623427).

Almost surely, 2^{129052303694161} is an apocalyptic number.

129052303694161 is the 11360119-th square number.

129052303694161 is the 5680060-th centered octagonal number.

It is an amenable number.

129052303694161 is a deficient number, since it is larger than the sum of its proper divisors (7149939916682).

129052303694161 is an frugal number, since it uses more digits than its factorization.

129052303694161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195840 (or 597920 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 129052303694161 in words is "one hundred twenty-nine trillion, fifty-two billion, three hundred three million, six hundred ninety-four thousand, one hundred sixty-one".