71365056523 has 2 divisors, whose sum is σ = 71365056524. Its totient is φ = 71365056522.

The previous prime is 71365056487. The next prime is 71365056527. The reversal of 71365056523 is 32565056317.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71365056523 - 2²⁵ = 71331502091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71365056523.

It is not a weakly prime, because it can be changed into another prime (71365056527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35682528261 + 35682528262.

It is an arithmetic number, because the mean of its divisors is an integer number (35682528262).

Almost surely, 2^71365056523 is an apocalyptic number.

71365056523 is a deficient number, since it is larger than the sum of its proper divisors (1).

71365056523 is an equidigital number, since it uses as much as digits as its factorization.

71365056523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567000, while the sum is 43.

The spelling of 71365056523 in words is "seventy-one billion, three hundred sixty-five million, fifty-six thousand, five hundred twenty-three".