71731047573 has 12 divisors (see below), whose sum is σ = 103615014048. Its totient is φ = 47819082600.

The previous prime is 71731047569. The next prime is 71731047581. The reversal of 71731047573 is 37574013717.

71731047573 is a `hidden beast` number, since 7 + 1 + 7 + 31 + 0 + 47 + 573 = 666.

It is not a de Polignac number, because 71731047573 - 2² = 71731047569 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71731047533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186936 + ... + 422382.

It is an arithmetic number, because the mean of its divisors is an integer number (8634584504).

Almost surely, 2^71731047573 is an apocalyptic number.

It is an amenable number.

71731047573 is a deficient number, since it is larger than the sum of its proper divisors (31883966475).

71731047573 is a wasteful number, since it uses less digits than its factorization.

71731047573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269304 (or 269301 counting only the distinct ones).

The product of its (nonzero) digits is 432180, while the sum is 45.

The spelling of 71731047573 in words is "seventy-one billion, seven hundred thirty-one million, forty-seven thousand, five hundred seventy-three".