71353475173 has 4 divisors (see below), whose sum is σ = 71354062188. Its totient is φ = 71352888160.

The previous prime is 71353475113. The next prime is 71353475191. The reversal of 71353475173 is 37157435317.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37157435317 = 29 ⋅1281290873.

It can be written as a sum of positive squares in 2 ways, for example, as 30186282564 + 41167192609 = 173742^2 + 202897^2 .

It is a cyclic number.

It is not a de Polignac number, because 71353475173 - 2¹³ = 71353466981 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 (71353475113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35686 + ... + 379447.

It is an arithmetic number, because the mean of its divisors is an integer number (17838515547).

Almost surely, 2^71353475173 is an apocalyptic number.

It is an amenable number.

71353475173 is a deficient number, since it is larger than the sum of its proper divisors (587015).

71353475173 is a wasteful number, since it uses less digits than its factorization.

71353475173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587014.

The product of its digits is 926100, while the sum is 46.

The spelling of 71353475173 in words is "seventy-one billion, three hundred fifty-three million, four hundred seventy-five thousand, one hundred seventy-three".