16634938171 has 2 divisors, whose sum is σ = 16634938172. Its totient is φ = 16634938170.

The previous prime is 16634938139. The next prime is 16634938183. The reversal of 16634938171 is 17183943661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16634938171 - 2⁵ = 16634938139 is a prime.

It is not a weakly prime, because it can be changed into another prime (16634638171) 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 as a sum of consecutive naturals, namely, 8317469085 + 8317469086.

It is an arithmetic number, because the mean of its divisors is an integer number (8317469086).

Almost surely, 2^16634938171 is an apocalyptic number.

16634938171 is a deficient number, since it is larger than the sum of its proper divisors (1).

16634938171 is an equidigital number, since it uses as much as digits as its factorization.

16634938171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The spelling of 16634938171 in words is "sixteen billion, six hundred thirty-four million, nine hundred thirty-eight thousand, one hundred seventy-one".