71587512791 has 8 divisors (see below), whose sum is σ = 73601487120. Its totient is φ = 69577705728.

The previous prime is 71587512769. The next prime is 71587512793. The reversal of 71587512791 is 19721578517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71587512791 - 2⁶ = 71587512727 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 (71587512793) 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 7 ways as a sum of consecutive naturals, for example, 1006961 + ... + 1075706.

It is an arithmetic number, because the mean of its divisors is an integer number (9200185890).

Almost surely, 2^71587512791 is an apocalyptic number.

71587512791 is a deficient number, since it is larger than the sum of its proper divisors (2013974329).

71587512791 is a wasteful number, since it uses less digits than its factorization.

71587512791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083633.

The product of its digits is 1234800, while the sum is 53.

The spelling of 71587512791 in words is "seventy-one billion, five hundred eighty-seven million, five hundred twelve thousand, seven hundred ninety-one".