71103344447 has 4 divisors (see below), whose sum is σ = 71213925720. Its totient is φ = 70992763176.

The previous prime is 71103344399. The next prime is 71103344479. The reversal of 71103344447 is 74444330117.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71103344447 - 2¹² = 71103340351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71103344447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71103344647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55289672 + ... + 55290957.

It is an arithmetic number, because the mean of its divisors is an integer number (17803481430).

Almost surely, 2^71103344447 is an apocalyptic number.

71103344447 is a deficient number, since it is larger than the sum of its proper divisors (110581273).

71103344447 is a wasteful number, since it uses less digits than its factorization.

71103344447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110581272.

The product of its (nonzero) digits is 112896, while the sum is 38.

The spelling of 71103344447 in words is "seventy-one billion, one hundred three million, three hundred forty-four thousand, four hundred forty-seven".