71384889943 has 2 divisors, whose sum is σ = 71384889944. Its totient is φ = 71384889942.

The previous prime is 71384889899. The next prime is 71384890019. The reversal of 71384889943 is 34998848317.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71384889943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71384886943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35692444971 + 35692444972.

It is an arithmetic number, because the mean of its divisors is an integer number (35692444972).

Almost surely, 2^71384889943 is an apocalyptic number.

71384889943 is a deficient number, since it is larger than the sum of its proper divisors (1).

71384889943 is an equidigital number, since it uses as much as digits as its factorization.

71384889943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41803776, while the sum is 64.

The spelling of 71384889943 in words is "seventy-one billion, three hundred eighty-four million, eight hundred eighty-nine thousand, nine hundred forty-three".