71071371089 has 2 divisors, whose sum is σ = 71071371090. Its totient is φ = 71071371088.

The previous prime is 71071371083. The next prime is 71071371143. The reversal of 71071371089 is 98017317017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51420097600 + 19651273489 = 226760^2 + 140183^2 .

It is a cyclic number.

It is not a de Polignac number, because 71071371089 - 2²⁰ = 71070322513 is a prime.

It is a super-3 number, since 3×71071371089³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (71071371083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35535685544 + 35535685545.

It is an arithmetic number, because the mean of its divisors is an integer number (35535685545).

Almost surely, 2^71071371089 is an apocalyptic number.

It is an amenable number.

71071371089 is a deficient number, since it is larger than the sum of its proper divisors (1).

71071371089 is an equidigital number, since it uses as much as digits as its factorization.

71071371089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74088, while the sum is 44.

The spelling of 71071371089 in words is "seventy-one billion, seventy-one million, three hundred seventy-one thousand, eighty-nine".