71365056487 has 2 divisors, whose sum is σ = 71365056488. Its totient is φ = 71365056486.

The previous prime is 71365056467. The next prime is 71365056523. The reversal of 71365056487 is 78465056317.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (78465056317) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71365056487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71365056467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35682528243 + 35682528244.

It is an arithmetic number, because the mean of its divisors is an integer number (35682528244).

Almost surely, 2^71365056487 is an apocalyptic number.

71365056487 is a deficient number, since it is larger than the sum of its proper divisors (1).

71365056487 is an equidigital number, since it uses as much as digits as its factorization.

71365056487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 71365056487 in words is "seventy-one billion, three hundred sixty-five million, fifty-six thousand, four hundred eighty-seven".