71447147071 has 4 divisors (see below), whose sum is σ = 71447715792. Its totient is φ = 71446578352.

The previous prime is 71447147033. The next prime is 71447147081. The reversal of 71447147071 is 17074174417.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 71447147071 - 2¹³ = 71447138879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71447147081) 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, 3355 + ... + 378028.

It is an arithmetic number, because the mean of its divisors is an integer number (17861928948).

Almost surely, 2^71447147071 is an apocalyptic number.

71447147071 is a deficient number, since it is larger than the sum of its proper divisors (568721).

71447147071 is a wasteful number, since it uses less digits than its factorization.

71447147071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568720.

The product of its (nonzero) digits is 153664, while the sum is 43.

The spelling of 71447147071 in words is "seventy-one billion, four hundred forty-seven million, one hundred forty-seven thousand, seventy-one".