71345807123 has 2 divisors, whose sum is σ = 71345807124. Its totient is φ = 71345807122.

The previous prime is 71345807089. The next prime is 71345807149. The reversal of 71345807123 is 32170854317.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71345807123 - 2⁸ = 71345806867 is a prime.

It is not a weakly prime, because it can be changed into another prime (71345807153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35672903561 + 35672903562.

It is an arithmetic number, because the mean of its divisors is an integer number (35672903562).

Almost surely, 2^71345807123 is an apocalyptic number.

71345807123 is a deficient number, since it is larger than the sum of its proper divisors (1).

71345807123 is an equidigital number, since it uses as much as digits as its factorization.

71345807123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 71345807123 in words is "seventy-one billion, three hundred forty-five million, eight hundred seven thousand, one hundred twenty-three".