71666734038734 has 8 divisors (see below), whose sum is σ = 107742764944440. Its totient is φ = 35752479057256.

The previous prime is 71666734038703. The next prime is 71666734038791. The reversal of 71666734038734 is 43783043766617.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×71666734038734² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40443979949 + ... + 40443981720.

It is an arithmetic number, because the mean of its divisors is an integer number (13467845618055).

Almost surely, 2^{71666734038734} is an apocalyptic number.

71666734038734 is a deficient number, since it is larger than the sum of its proper divisors (36076030905706).

71666734038734 is a wasteful number, since it uses less digits than its factorization.

71666734038734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80887962114.

The product of its (nonzero) digits is 256048128, while the sum is 65.

The spelling of 71666734038734 in words is "seventy-one trillion, six hundred sixty-six billion, seven hundred thirty-four million, thirty-eight thousand, seven hundred thirty-four".