71431485443 has 4 divisors (see below), whose sum is σ = 71498307360. Its totient is φ = 71364663528.

The previous prime is 71431485439. The next prime is 71431485451. The reversal of 71431485443 is 34458413417.

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 71431485443 - 2² = 71431485439 is a prime.

It is a super-2 number, since 2×71431485443² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71431485394 and 71431485403.

It is not an unprimeable number, because it can be changed into a prime (71431485413) 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, 33409355 + ... + 33411492.

It is an arithmetic number, because the mean of its divisors is an integer number (17874576840).

Almost surely, 2^71431485443 is an apocalyptic number.

71431485443 is a deficient number, since it is larger than the sum of its proper divisors (66821917).

71431485443 is a wasteful number, since it uses less digits than its factorization.

71431485443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66821916.

The product of its digits is 645120, while the sum is 44.

The spelling of 71431485443 in words is "seventy-one billion, four hundred thirty-one million, four hundred eighty-five thousand, four hundred forty-three".