71171217116 has 24 divisors (see below), whose sum is σ = 125911455264. Its totient is φ = 35197236800.

The previous prime is 71171217101. The next prime is 71171217137. The reversal of 71171217116 is 61171217117.

It is a happy number.

It is a super-2 number, since 2×71171217116² (a number of 23 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 7 ways as a sum of consecutive naturals, for example, 307526 + ... + 486738.

It is an arithmetic number, because the mean of its divisors is an integer number (5246310636).

Almost surely, 2^71171217116 is an apocalyptic number.

It is an amenable number.

71171217116 is a deficient number, since it is larger than the sum of its proper divisors (54740238148).

71171217116 is a wasteful number, since it uses less digits than its factorization.

71171217116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180301 (or 180299 counting only the distinct ones).

The product of its digits is 4116, while the sum is 35.

Subtracting from 71171217116 its reverse (61171217117), we obtain a palindrome (9999999999).

The spelling of 71171217116 in words is "seventy-one billion, one hundred seventy-one million, two hundred seventeen thousand, one hundred sixteen".