29081664529 has 2 divisors, whose sum is σ = 29081664530. Its totient is φ = 29081664528.

The previous prime is 29081664527. The next prime is 29081664569. The reversal of 29081664529 is 92546618092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14773916304 + 14307748225 = 121548^2 + 119615^2 .

It is a cyclic number.

It is not a de Polignac number, because 29081664529 - 2¹ = 29081664527 is a prime.

Together with 29081664527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (29081664523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14540832264 + 14540832265.

It is an arithmetic number, because the mean of its divisors is an integer number (14540832265).

Almost surely, 2^29081664529 is an apocalyptic number.

It is an amenable number.

29081664529 is a deficient number, since it is larger than the sum of its proper divisors (1).

29081664529 is an equidigital number, since it uses as much as digits as its factorization.

29081664529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 29081664529 in words is "twenty-nine billion, eighty-one million, six hundred sixty-four thousand, five hundred twenty-nine".