71440003447 has 12 divisors (see below), whose sum is σ = 73171189080. Its totient is φ = 69748890288.

The previous prime is 71440003403. The next prime is 71440003483. The reversal of 71440003447 is 74430004417.

It is not a de Polignac number, because 71440003447 - 2³¹ = 69292519799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71440003847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5238804 + ... + 5252422.

It is an arithmetic number, because the mean of its divisors is an integer number (6097599090).

Almost surely, 2^71440003447 is an apocalyptic number.

71440003447 is a deficient number, since it is larger than the sum of its proper divisors (1731185633).

71440003447 is a wasteful number, since it uses less digits than its factorization.

71440003447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16542 (or 16499 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 34.

The spelling of 71440003447 in words is "seventy-one billion, four hundred forty million, three thousand, four hundred forty-seven".