71441632529 has 2 divisors, whose sum is σ = 71441632530. Its totient is φ = 71441632528.

The previous prime is 71441632519. The next prime is 71441632531. The reversal of 71441632529 is 92523614417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60209872129 + 11231760400 = 245377^2 + 105980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71441632529 is a prime.

It is a Sophie Germain prime.

Together with 71441632531, 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 71441632529.

It is not a weakly prime, because it can be changed into another prime (71441632519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35720816264 + 35720816265.

It is an arithmetic number, because the mean of its divisors is an integer number (35720816265).

Almost surely, 2^71441632529 is an apocalyptic number.

It is an amenable number.

71441632529 is a deficient number, since it is larger than the sum of its proper divisors (1).

71441632529 is an equidigital number, since it uses as much as digits as its factorization.

71441632529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The spelling of 71441632529 in words is "seventy-one billion, four hundred forty-one million, six hundred thirty-two thousand, five hundred twenty-nine".