71880163 has 2 divisors, whose sum is σ = 71880164. Its totient is φ = 71880162.

The previous prime is 71880161. The next prime is 71880197. The reversal of 71880163 is 36108817.

It is an a-pointer prime, because the next prime (71880197) can be obtained adding 71880163 to its sum of digits (34).

It is a weak prime.

It is an emirp because it is prime and its reverse (36108817) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71880163 - 2¹ = 71880161 is a prime.

Together with 71880161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (71880161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35940081 + 35940082.

It is an arithmetic number, because the mean of its divisors is an integer number (35940082).

Almost surely, 2^71880163 is an apocalyptic number.

71880163 is a deficient number, since it is larger than the sum of its proper divisors (1).

71880163 is an equidigital number, since it uses as much as digits as its factorization.

71880163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 71880163 is about 8478.2169705664. The cubic root of 71880163 is about 415.7858299540.

The spelling of 71880163 in words is "seventy-one million, eight hundred eighty thousand, one hundred sixty-three".