71540170820312 has 64 divisors (see below), whose sum is σ = 135453136896000. Its totient is φ = 35420443793280.

The previous prime is 71540170820263. The next prime is 71540170820359. The reversal of 71540170820312 is 21302807104517.

It is a self number, because there is not a number n which added to its sum of digits gives 71540170820312.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2964400598 + ... + 2964424730.

It is an arithmetic number, because the mean of its divisors is an integer number (2116455264000).

Almost surely, 2^{71540170820312} is an apocalyptic number.

It is an amenable number.

71540170820312 is a deficient number, since it is larger than the sum of its proper divisors (63912966075688).

71540170820312 is a wasteful number, since it uses less digits than its factorization.

71540170820312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29736 (or 29732 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

Adding to 71540170820312 its reverse (21302807104517), we get a palindrome (92842977924829).

The spelling of 71540170820312 in words is "seventy-one trillion, five hundred forty billion, one hundred seventy million, eight hundred twenty thousand, three hundred twelve".