71171390612 has 24 divisors (see below), whose sum is σ = 142482527040. Its totient is φ = 30472079040.

The previous prime is 71171390611. The next prime is 71171390623. The reversal of 71171390612 is 21609317117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71171390611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218689 + ... + 1275752.

It is an arithmetic number, because the mean of its divisors is an integer number (5936771960).

Almost surely, 2^71171390612 is an apocalyptic number.

It is an amenable number.

71171390612 is an abundant number, since it is smaller than the sum of its proper divisors (71311136428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71171390612 is a wasteful number, since it uses less digits than its factorization.

71171390612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495471 (or 2495469 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 38.

The spelling of 71171390612 in words is "seventy-one billion, one hundred seventy-one million, three hundred ninety thousand, six hundred twelve".