29993672322161 has 2 divisors, whose sum is σ = 29993672322162. Its totient is φ = 29993672322160.

The previous prime is 29993672322151. The next prime is 29993672322169. The reversal of 29993672322161 is 16122327639992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22196347690000 + 7797324632161 = 4711300^2 + 2792369^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29993672322161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29993672322094 and 29993672322103.

It is not a weakly prime, because it can be changed into another prime (29993672322169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14996836161080 + 14996836161081.

It is an arithmetic number, because the mean of its divisors is an integer number (14996836161081).

Almost surely, 2^{29993672322161} is an apocalyptic number.

It is an amenable number.

29993672322161 is a deficient number, since it is larger than the sum of its proper divisors (1).

29993672322161 is an equidigital number, since it uses as much as digits as its factorization.

29993672322161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26453952, while the sum is 62.

The spelling of 29993672322161 in words is "twenty-nine trillion, nine hundred ninety-three billion, six hundred seventy-two million, three hundred twenty-two thousand, one hundred sixty-one".