71063853389 has 2 divisors, whose sum is σ = 71063853390. Its totient is φ = 71063853388.

The previous prime is 71063853359. The next prime is 71063853391. The reversal of 71063853389 is 98335836017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54794850889 + 16269002500 = 234083^2 + 127550^2 .

It is a cyclic number.

It is not a de Polignac number, because 71063853389 - 2²⁴ = 71047076173 is a prime.

It is a Sophie Germain prime.

Together with 71063853391, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 71063853389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71063853359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35531926694 + 35531926695.

It is an arithmetic number, because the mean of its divisors is an integer number (35531926695).

Almost surely, 2^71063853389 is an apocalyptic number.

It is an amenable number.

71063853389 is a deficient number, since it is larger than the sum of its proper divisors (1).

71063853389 is an equidigital number, since it uses as much as digits as its factorization.

71063853389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 71063853389 in words is "seventy-one billion, sixty-three million, eight hundred fifty-three thousand, three hundred eighty-nine".