71351890171 has 2 divisors, whose sum is σ = 71351890172. Its totient is φ = 71351890170.

The previous prime is 71351890133. The next prime is 71351890177. The reversal of 71351890171 is 17109815317.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71351890171 - 2²¹ = 71349793019 is a prime.

It is not a weakly prime, because it can be changed into another prime (71351890177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35675945085 + 35675945086.

It is an arithmetic number, because the mean of its divisors is an integer number (35675945086).

Almost surely, 2^71351890171 is an apocalyptic number.

71351890171 is a deficient number, since it is larger than the sum of its proper divisors (1).

71351890171 is an equidigital number, since it uses as much as digits as its factorization.

71351890171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 43.

The spelling of 71351890171 in words is "seventy-one billion, three hundred fifty-one million, eight hundred ninety thousand, one hundred seventy-one".