71317413280 has 48 divisors (see below), whose sum is σ = 169560616680. Its totient is φ = 28345254912.

The previous prime is 71317413247. The next prime is 71317413281. The reversal of 71317413280 is 8231471317.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 59764603024 + 11552810256 = 244468^2 + 107484^2 .

It is not an unprimeable number, because it can be changed into a prime (71317413281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1394415 + ... + 1444654.

Almost surely, 2^71317413280 is an apocalyptic number.

It is an amenable number.

71317413280 is an abundant number, since it is smaller than the sum of its proper divisors (98243203400).

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

71317413280 is a wasteful number, since it uses less digits than its factorization.

71317413280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839241 (or 2839233 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

Adding to 71317413280 its reverse (8231471317), we get a palindrome (79548884597).

The spelling of 71317413280 in words is "seventy-one billion, three hundred seventeen million, four hundred thirteen thousand, two hundred eighty".