71058842321 has 2 divisors, whose sum is σ = 71058842322. Its totient is φ = 71058842320.

The previous prime is 71058842299. The next prime is 71058842329. The reversal of 71058842321 is 12324885017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61811904400 + 9246937921 = 248620^2 + 96161^2 .

It is an emirp because it is prime and its reverse (12324885017) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71058842321 is a prime.

It is not a weakly prime, because it can be changed into another prime (71058842329) 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, 35529421160 + 35529421161.

It is an arithmetic number, because the mean of its divisors is an integer number (35529421161).

Almost surely, 2^71058842321 is an apocalyptic number.

It is an amenable number.

71058842321 is a deficient number, since it is larger than the sum of its proper divisors (1).

71058842321 is an equidigital number, since it uses as much as digits as its factorization.

71058842321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 71058842321 in words is "seventy-one billion, fifty-eight million, eight hundred forty-two thousand, three hundred twenty-one".